fix: crash on unavailable source api (#4)

* fix: crash on unavailable source api

the screen not updating because of errors

* Change temperature format if null

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Esp32_Code/INFOSCREEN_WITH_INTERVAL/INFOSCREEN_WITH_INTERVAL.ino

@@ -215,6 +215,18 @@ int jpegDrawCallback(JPEGDRAW *pDraw) {
   return 1; // Continue decoding
 }
 
+void clearDisplay() {
+  // Clear both layers of the display
+  Paint_SelectImage(BlackImage);
+  Paint_Clear(WHITE);
+  Paint_SelectImage(RYImage);
+  Paint_Clear(WHITE);
+  
+  // Send clear command to the display
+  EPD_7IN5B_V2_Display(BlackImage, RYImage);
+  Serial.println("Display cleared.");
+}
+
 void setup() {
   Serial.begin(115200);
   Serial.println("E-Ink Display Initialization");
@@ -513,27 +525,36 @@ void fetchAndDisplayImage() {
             Serial.println("Image displayed successfully.");
           } else {
             Serial.println("Failed to open JPEG image");
+            clearDisplay();
           }
         } else {
           Serial.println("Failed to read entire image.");
+          clearDisplay();
         }
         free(buffer);
       } else {
         Serial.println("Failed to allocate buffer!");
+        clearDisplay();
       }
     } else {
       Serial.println("Content length unknown or invalid.");
+      clearDisplay();
     }
   } else if (httpCode == HTTPC_ERROR_CONNECTION_REFUSED) {
     Serial.println("Connection refused - server may be down");
+    clearDisplay();
   } else if (httpCode == HTTPC_ERROR_CONNECTION_LOST) {
     Serial.println("Connection lost during request");
+    clearDisplay();
   } else if (httpCode == HTTPC_ERROR_NO_HTTP_SERVER) {
     Serial.println("No HTTP server found");
+    clearDisplay();
   } else if (httpCode == HTTPC_ERROR_NOT_CONNECTED) {
     Serial.println("Not connected to server");
+    clearDisplay();
   } else {
     Serial.printf("HTTP GET failed, error: %d\n", httpCode);
+    clearDisplay();
   }
   
   http.end();

HomeApi.csproj

@@ -1,11 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
-        <ImplicitUsings>enable</ImplicitUsings>
-        <Nullable>enable</Nullable>
-        <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
-    </PropertyGroup>
-
-</Project>

HomeApi/Extensions/ContractExtensions.cs

@@ -18,10 +18,10 @@ public static class ContractExtensions
     /// A <see cref="WeatherInformation"/> object populated with current weather, aurora probability, and forecast information.
     /// </returns>
     public static WeatherInformation ToContract(
-        this WeatherData weather, 
+        this WeatherData? weather, 
-        string locationName, 
+        string? locationName,
         AuroraForecastApiResponse? auroraForecast,
-        List<Models.Forecast> forecasts)
+        List<Models.Forecast>? forecasts)
     {
         return new WeatherInformation
         {
@@ -58,23 +58,23 @@ public static class ContractExtensions
                 },
                 AuroraProbability = new Probability
                 {
-                    Date = auroraForecast.Date,
+                    Date = auroraForecast?.Date ?? DateTime.Now,
                     Calculated = new CalculatedProbability
                     {
-                        Value = auroraForecast.Probability.Calculated.Value,
+                        Value = auroraForecast?.Probability.Calculated.Value ?? 0,
-                        Colour = auroraForecast.Probability.Calculated.Colour,
+                        Colour = auroraForecast?.Probability.Calculated.Colour ?? string.Empty,
-                        Lat = auroraForecast.Probability.Calculated.Lat,
+                        Lat = auroraForecast?.Probability.Calculated.Lat ?? 0,
-                        Long = auroraForecast.Probability.Calculated.Long
+                        Long = auroraForecast?.Probability.Calculated.Long ?? 0
                     },
-                    Colour = auroraForecast.Probability.Colour,
+                    Colour = auroraForecast?.Probability.Colour ?? string.Empty,
-                    Value = auroraForecast.Probability.Value,
+                    Value = auroraForecast?.Probability.Value.ToString() ?? "No data",
                     HighestProbability = new Highest
                     {
-                        Colour = auroraForecast.Probability.Highest.Colour,
+                        Colour = auroraForecast?.Probability.Highest.Colour ?? string.Empty,
-                        Lat = auroraForecast.Probability.Highest.Lat,
+                        Lat = auroraForecast?.Probability.Highest.Lat ?? 0,
-                        Long = auroraForecast.Probability.Highest.Long,
+                        Long = auroraForecast?.Probability.Highest.Long ?? 0,
-                        Value = auroraForecast.Probability.Highest.Value,
+                        Value = auroraForecast?.Probability.Highest.Value ?? 0,
-                        Date = auroraForecast.Probability.Highest.Date
+                        Date = auroraForecast?.Probability.Highest.Date ?? DateTime.Now
                     }
                 }
             },

HomeApi/Extensions/MediatorExtensions.cs

@@ -0,0 +1,22 @@
+using MediatR;
+
+namespace HomeApi.Extensions;
+
+public static class MediatorExtensions
+{
+    public static async Task<T?> TrySendAsync<T>(
+        this IMediator mediator,
+        IRequest<T> request,
+        CancellationToken cancellationToken) where T : class
+    {
+        try
+        {
+            return await mediator.Send(request, cancellationToken);
+        }
+        catch (OperationCanceledException) { throw; }
+        catch
+        {
+            return null;
+        }
+    }
+}

HomeApi/Extensions/ServiceCallExtensions.cs

@@ -0,0 +1,23 @@
+namespace HomeApi.Extensions;
+
+public static class ServiceCallExtensions
+{
+    public static async Task<TResult?> TryCallAsync<TService, TResult>(
+        this TService service,
+        Func<TService, Task<TResult>> action,
+        ILogger logger,
+        string errorMessage)
+        where TResult : class?
+    {
+        try
+        {
+            return await action(service);
+        }
+        catch (OperationCanceledException) { throw; }
+        catch (Exception exception)
+        {
+            logger.LogError(exception, errorMessage);
+            return null;
+        }
+    }
+}

HomeApi/Handlers/ImageGeneration.cs

@@ -1,5 +1,6 @@
 using System.Dynamic;
 using System.Reflection;
+using HomeApi.Extensions;
 using HomeApi.Models.Configuration;
 using MediatR;
 using Microsoft.Extensions.Options;
@@ -22,8 +23,8 @@ public static class ImageGeneration
 
         public async Task<Stream> Handle(Command request, CancellationToken cancellationToken)
         {
-            var weather = await mediator.Send(new Weather.Command(), cancellationToken);
+            var weather = await mediator.TrySendAsync(new Weather.Command(), cancellationToken);
-            var departureBoard = await mediator.Send(new DepartureBoard.Command(), cancellationToken);
+            var departureBoard = await mediator.TrySendAsync(new DepartureBoard.Command(), cancellationToken);
             
             var model = new Models.Image
             {
@@ -31,8 +32,6 @@ public static class ImageGeneration
                 TimeTable = departureBoard
             };
             
-            if(weather is null)
-                throw new Exception("Weather data not found");
             
             var engine = new RazorLightEngineBuilder()
                 .SetOperatingAssembly(Assembly.GetExecutingAssembly())
@@ -59,7 +58,7 @@ public static class ImageGeneration
         {
             var browserFetcher = new BrowserFetcher();
             await browserFetcher.DownloadAsync();
-            var browser = await Puppeteer.LaunchAsync(new LaunchOptions
+            await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions
             {
                 Headless = true,
                 Args = ["--disable-gpu"]

HomeApi/Handlers/Weather.cs

@@ -35,16 +35,27 @@ public static class Weather
 
         public async Task<WeatherInformation> Handle(Command request, CancellationToken cancellationToken)
         {
-            var coordinates = await _geocodingService.GetCoordinatesAsync(_apiConfiguration.DefaultCity);
+            var coordinates = await _geocodingService.TryCallAsync(service =>
-            if (coordinates is null)
+                service.GetCoordinatesAsync(_apiConfiguration.DefaultCity),
-                throw new Exception("Coordinates not found");
+                _logger, 
+                "Failed to get coordinates"
+            );
             
-            var aurora = await _auroraService.GetAuroraForecastAsync(coordinates.Lat, coordinates.Lon);
+            var aurora = await _auroraService.TryCallAsync(service => 
-            var weather = await _weatherService.GetWeatherAsync(coordinates.Lat, coordinates.Lon);
+                service.GetAuroraForecastAsync(coordinates?.Lat ?? "0.00", coordinates?.Lon ?? "0.00"), 
+                _logger, 
+                "Failed to get aurora forecast"
+            );
             
-            var forecasts = weather.Forecast.Forecastday.Select(day => day.ToForecast()).ToList();
+            var weather = await _weatherService.TryCallAsync(service => 
+                service.GetWeatherAsync(coordinates?.Lat ?? string.Empty, coordinates?.Lon ?? string.Empty), 
+                _logger, 
+                "Failed to get weather data"
+            );
 
-            return weather.ToContract(coordinates.Name, aurora, forecasts);
+            var forecasts = weather?.Forecast.Forecastday.Select(day => day.ToForecast()).ToList();
+
+            return weather?.ToContract(coordinates?.Name, aurora, forecasts) ?? new WeatherInformation();
         }
     }
 }

HomeApi/Integration/WeatherService.cs

@@ -14,9 +14,15 @@ public class WeatherService(IWeatherClient weatherApi, IOptions<ApiConfiguration
 {
     private readonly ApiConfiguration _apiConfig = options.Value;
 
-    public Task<WeatherData> GetWeatherAsync(string lat, string lon)
+    public Task<WeatherData> GetWeatherAsync(string? lat, string? lon)
     {
         var location = $"{lat},{lon}";
+        
+        if (string.IsNullOrEmpty(lat) || string.IsNullOrEmpty(lon))
+        {
+            location = _apiConfig.DefaultCity;
+        }
+        
         return weatherApi.GetForecastAsync(_apiConfig.Keys.Weather, location);
     }
 }

HomeApi/Models/ImageGeneration.cs

@@ -2,6 +2,6 @@ namespace HomeApi.Models;
 
 public class Image
 {
-    public WeatherInformation Weather { get; set; }
+    public WeatherInformation? Weather { get; set; }
-    public List<TimeTable> TimeTable { get; set; }
+    public List<TimeTable>? TimeTable { get; set; }
 }

HomeApi/Models/Response/TrafikLabsApiResponse.cs

@@ -1,4 +1,5 @@
 namespace HomeApi.Models.Response;
+
 public class TrafikLabsApiResponse
 {
     public List<Departure> Departure { get; set; }

HomeApi/Models/Response/YrWeatherForecastResponse.cs

@@ -0,0 +1,153 @@
+using System.Text.Json.Serialization;
+
+namespace HomeApi.Models.Response;
+
+public class Data
+{
+    [JsonPropertyName("instant")]
+    public Instant Instant { get; set; }
+
+    [JsonPropertyName("next_12_hours")]
+    public Next12Hours Next12Hours { get; set; }
+
+    [JsonPropertyName("next_1_hours")]
+    public Next1Hours Next1Hours { get; set; }
+
+    [JsonPropertyName("next_6_hours")]
+    public Next6Hours Next6Hours { get; set; }
+}
+
+public class Details
+{
+    [JsonPropertyName("air_pressure_at_sea_level")]
+    public double AirPressureAtSeaLevel { get; set; }
+
+    [JsonPropertyName("air_temperature")]
+    public double AirTemperature { get; set; }
+
+    [JsonPropertyName("cloud_area_fraction")]
+    public double CloudAreaFraction { get; set; }
+
+    [JsonPropertyName("relative_humidity")]
+    public double RelativeHumidity { get; set; }
+
+    [JsonPropertyName("wind_from_direction")]
+    public double WindFromDirection { get; set; }
+
+    [JsonPropertyName("wind_speed")]
+    public double WindSpeed { get; set; }
+
+    [JsonPropertyName("precipitation_amount")]
+    public double PrecipitationAmount { get; set; }
+}
+
+public class Geometry
+{
+    [JsonPropertyName("type")]
+    public string Type { get; set; }
+
+    [JsonPropertyName("coordinates")]
+    public List<double> Coordinates { get; set; }
+}
+
+public class Instant
+{
+    [JsonPropertyName("details")]
+    public Details Details { get; set; }
+}
+
+public class Meta
+{
+    [JsonPropertyName("updated_at")]
+    public DateTime UpdatedAt { get; set; }
+
+    [JsonPropertyName("units")]
+    public Units Units { get; set; }
+}
+
+public class Next12Hours
+{
+    [JsonPropertyName("summary")]
+    public Summary Summary { get; set; }
+
+    [JsonPropertyName("details")]
+    public Details Details { get; set; }
+}
+
+public class Next1Hours
+{
+    [JsonPropertyName("summary")]
+    public Summary Summary { get; set; }
+
+    [JsonPropertyName("details")]
+    public Details Details { get; set; }
+}
+
+public class Next6Hours
+{
+    [JsonPropertyName("summary")]
+    public Summary Summary { get; set; }
+
+    [JsonPropertyName("details")]
+    public Details Details { get; set; }
+}
+
+public class Properties
+{
+    [JsonPropertyName("meta")]
+    public Meta Meta { get; set; }
+
+    [JsonPropertyName("timeseries")]
+    public List<Timeseries> Timeseries { get; set; }
+}
+
+public class YrWeatherForecastResponse
+{
+    [JsonPropertyName("type")]
+    public string Type { get; set; }
+
+    [JsonPropertyName("geometry")]
+    public Geometry Geometry { get; set; }
+
+    [JsonPropertyName("properties")]
+    public Properties Properties { get; set; }
+}
+
+public class Summary
+{
+    [JsonPropertyName("symbol_code")]
+    public string SymbolCode { get; set; }
+}
+
+public class Timeseries
+{
+    [JsonPropertyName("time")]
+    public DateTime Time { get; set; }
+
+    [JsonPropertyName("data")]
+    public Data Data { get; set; }
+}
+
+public class Units
+{
+    [JsonPropertyName("air_pressure_at_sea_level")]
+    public string AirPressureAtSeaLevel { get; set; }
+
+    [JsonPropertyName("air_temperature")]
+    public string AirTemperature { get; set; }
+
+    [JsonPropertyName("cloud_area_fraction")]
+    public string CloudAreaFraction { get; set; }
+
+    [JsonPropertyName("precipitation_amount")]
+    public string PrecipitationAmount { get; set; }
+
+    [JsonPropertyName("relative_humidity")]
+    public string RelativeHumidity { get; set; }
+
+    [JsonPropertyName("wind_from_direction")]
+    public string WindFromDirection { get; set; }
+
+    [JsonPropertyName("wind_speed")]
+    public string WindSpeed { get; set; }
+}

HomeApi/Models/WeatherInformation.cs

@@ -1,24 +1,26 @@
+#nullable disable
+
 using HomeApi.Models.Response;
 
 namespace HomeApi.Models;
 
 public class WeatherInformation
 {
-    public string CityName { get; set; } = string.Empty;
+    public string CityName { get; set; } = "Not defined";
     public Current Current { get; set; } = new();
     public List<Forecast> Forecast { get; set; }
 }
 
 public class Current
 {
-    public string Date { get; set; }
+    public string Date { get; set; } = string.Empty;
-    public double Feelslike { get; set; }
+    public double Feelslike { get; set; } = 0;
-    public int IsDay { get; set; }
+    public int IsDay { get; set; } = 1;
     public double WindPerMeterSecond { get; set; } = 0;
     public double WindGustPerMeterSecond { get; set; } = 0;
     public double Temperature { get; set; } = 0;
     public string LastUpdated { get; set; } = string.Empty;
-    public int Cloud { get; set; }
+    public int Cloud { get; set; } = 0;
     public string WindDirection { get; set; } = string.Empty;
     public Location WeatherDataLocation { get; set; } = new();
     public AirQuality AirQuality { get; set; }
@@ -28,72 +30,72 @@ public class Current
 
 public class Location
 {
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string Region { get; set; }
+    public string Region { get; set; } = string.Empty;
-    public string Country { get; set; }
+    public string Country { get; set; } = string.Empty;
-    public double Lat { get; set; }
+    public double Lat { get; set; } = 0;
-    public double Lon { get; set; }
+    public double Lon { get; set; } = 0;
 }
 
 public class Probability
 {
-    public DateTime Date { get; set; }
+    public DateTime Date { get; set; } = DateTime.Now;
-    public CalculatedProbability Calculated { get; set; } // my location?
+    public CalculatedProbability Calculated { get; set; } = new();
-    public string Colour { get; set; }
+    public string Colour { get; set; } = string.Empty;
-    public int Value { get; set; }
+    public string Value { get; set; } = string.Empty;
-    public Highest HighestProbability { get; set; }
+    public Highest HighestProbability { get; set; } = new();
 }
 
 public class Highest
 {
-    public DateTime Date { get; set; }
+    public DateTime Date { get; set; } = DateTime.Now;
-    public string Colour { get; set; }
+    public string Colour { get; set; } = string.Empty;
-    public double Lat { get; set; }
+    public double Lat { get; set; } = 0;
-    public double Long { get; set; }
+    public double Long { get; set; } = 0;
-    public int Value { get; set; }
+    public int Value { get; set; } = 0;
 }
 
 public class Forecast
 {
-    public string Date { get; set; }
+    public string Date { get; set; } = string.Empty;
-    public double MinTempC { get; set; }
+    public double MinTempC { get; set; } = 0;
-    public double MaxTempC { get; set; }
+    public double MaxTempC { get; set; } = 0;
-    public string DayIcon { get; set; }
+    public string DayIcon { get; set; } = string.Empty;
-    public WeatherSummary? Day { get; set; }
+    public WeatherSummary? Day { get; set; } = null;
-    public WeatherSummary? Night { get; set; }
+    public WeatherSummary? Night { get; set; } = null;
-    public Astro Astro { get; set; }
+    public Astro Astro { get; set; } = new();
-    public int IconCode { get; set; }
+    public int IconCode { get; set; } = 0;
     
-    public int ChanceOfRain { get; set; }
+    public int ChanceOfRain { get; set; }  = 0;
 }
 public class Astro
 {
-    public string Sunrise { get; set; }
+    public string Sunrise { get; set; } = string.Empty;
-    public string Sunset { get; set; }
+    public string Sunset { get; set; } = string.Empty;
-    public string Moonrise { get; set; }
+    public string Moonrise { get; set; } = string.Empty;
-    public string Moonset { get; set; }
+    public string Moonset { get; set; } = string.Empty; 
-    public string Moon_Phase { get; set; }
+    public string Moon_Phase { get; set; } = string.Empty;
     public double? Moon_Illumination { get; set; }
 }
 
 public class AirQuality
 {
-    public double Co { get; set; }
+    public double Co { get; set; } = 0;
-    public double No2 { get; set; }
+    public double No2 { get; set; } = 0;
-    public double O3 { get; set; }
+    public double O3 { get; set; } = 0;
-    public double So2 { get; set; }
+    public double So2 { get; set; } = 0;
-    public double Pm2_5 { get; set; }
+    public double Pm2_5 { get; set; } = 0;
-    public double Pm10 { get; set; }
+    public double Pm10 { get; set; } = 0;
-    public int Us_Epa_Index { get; set; }
+    public int Us_Epa_Index { get; set; } = 0;
-    public int Gb_Defra_Index { get; set; }
+    public int Gb_Defra_Index { get; set; } = 0;
 }
 
 public class WeatherSummary
 {
-    public string ConditionText { get; set; }
+    public string ConditionText { get; set; } = string.Empty;
-    public string ConditionIcon { get; set; }
+    public string ConditionIcon { get; set; } = string.Empty;
-    public double AvgTempC { get; set; }
+    public double AvgTempC { get; set; } = 0;
-    public double AvgFeelslikeC { get; set; }
+    public double AvgFeelslikeC { get; set; } = 0;
-    public int TotalChanceOfRain { get; set; }
+    public int TotalChanceOfRain { get; set; } = 0;
-    public int TotalChanceOfSnow { get; set; }
+    public int TotalChanceOfSnow { get; set; } = 0;
 }

HomeApi/wwwroot/index.cshtml

@@ -43,8 +43,11 @@
         return "fa-question-circle";
     }
     
-    private string GetAirQualityStatus(AirQuality data)
+    private string GetAirQualityStatus(AirQuality? data)
     {
+        if(data == null)
+            return "No Data";
+        
         var highestAqi = Math.Max(data.Us_Epa_Index, data.Gb_Defra_Index);
 
         return highestAqi switch
@@ -487,12 +490,14 @@
     <div class="current-weather">
         <div class="location">
             <i class="fas fa-map-marker-alt location-icon"></i>
-            <span class="location-text">@Model.Weather.CityName</span>
+            <span class="location-text">@(Model.Weather?.CityName ?? "Failed to fetch data")</span>
         </div>
 
         <div class="current-temp">
-            <div class="temp-main">@Model.Weather.Current.Temperature°C</div>
+            <div class="temp-main">
-            <div class="feels-like">Feels like @Model.Weather.Current.Feelslike°C</div>
+                @(Model.Weather?.Current.Temperature != null ? $"{Model.Weather.Current.Temperature}°C" : "N/A")
+            </div>
+            <div class="feels-like">Feels like @Model.Weather?.Current.Feelslike°C</div>
         </div>
 
         <div class="weather-details">
@@ -501,7 +506,7 @@
                     <i class="fas fa-cloud cloud-icon"></i>
                     <span>Clouds</span>
                 </div>
-                <span class="detail-value">@Model.Weather.Current.Cloud%</span>
+                <span class="detail-value">@Model?.Weather?.Current.Cloud%</span>
             </div>
 
             <div class="detail-item">
@@ -509,7 +514,7 @@
                     <i class="fas fa-wind wind-icon"></i>
                     <span>Wind</span>
                 </div>
-                <span class="detail-value">@Model.Weather.Current.WindPerMeterSecond.ToString("0.##") m/s @Model.Weather.Current.WindDirection</span>
+                <span class="detail-value">@Model?.Weather?.Current.WindPerMeterSecond.ToString("0.##") m/s @Model?.Weather?.Current.WindDirection</span>
             </div>
 
             <div class="detail-item">
@@ -517,7 +522,7 @@
                     <i class="fas fa-chart-line activity-icon"></i>
                     <span>Gusts</span>
                 </div>
-                <span class="detail-value">@Model.Weather.Current.WindGustPerMeterSecond.ToString("0.##") m/s</span>
+                <span class="detail-value">@Model?.Weather?.Current.WindGustPerMeterSecond.ToString("0.##") m/s</span>
             </div>
 
             <div class="detail-item">
@@ -525,21 +530,21 @@
                     <i class="fas fa-star aurora-icon"></i>
                     <span>Aurora</span>
                 </div>
-                <span class="detail-value">@Model.Weather.Current.AuroraProbability.Value%</span>
+                <span class="detail-value">@Model?.Weather?.Current.AuroraProbability.Value%</span>
             </div>
         </div>
 
         <div class="air-quality-badge">
-            Air Quality: @GetAirQualityStatus(Model.Weather.Current.AirQuality)
+            Air Quality: @GetAirQualityStatus(Model?.Weather?.Current.AirQuality)
         </div>
     </div>
 
     <!-- Middle Column - Forecast -->
     <div class="forecast-section">
-        <h3 class="section-title">@Model.Weather.Forecast.Count-Day Forecast</h3>
+        <h3 class="section-title">@Model?.Weather?.Forecast.Count-Day Forecast</h3>
 
         <div class="forecast-grid">
-            @foreach (var day in Model.Weather.Forecast)
+            @foreach (var day in Model?.Weather?.Forecast ?? Enumerable.Empty<Forecast>())
             {
                 <div class="forecast-card">
                     <div class="forecast-date">@GetDayStatus(day.Date)</div>
@@ -559,7 +564,7 @@
                     <i class="fas fa-sun sunrise-icon"></i>
                     <span>Sunrise</span>
                 </div>
-                <span class="sun-moon-value">@Model.Weather.Forecast[0].Astro.Sunrise</span>
+                <span class="sun-moon-value">@Model?.Weather?.Forecast[0].Astro.Sunrise</span>
             </div>
 
             <div class="sun-moon-item">
@@ -567,7 +572,7 @@
                     <i class="fas fa-sun sunset-icon"></i>
                     <span>Sunset</span>
                 </div>
-                <span class="sun-moon-value">@Model.Weather.Forecast[0].Astro.Sunset</span>
+                <span class="sun-moon-value">@Model?.Weather?.Forecast[0].Astro.Sunset</span>
             </div>
 
             <div class="sun-moon-item">
@@ -575,7 +580,7 @@
                     <i class="fas fa-moon moon-icon"></i>
                     <span>Moonrise</span>
                 </div>
-                <span class="sun-moon-value">@Model.Weather.Forecast[0].Astro.Moonrise</span>
+                <span class="sun-moon-value">@Model?.Weather?.Forecast[0].Astro.Moonrise</span>
             </div>
 
             <div class="sun-moon-item">
@@ -583,12 +588,12 @@
                     <i class="fas fa-moon moon-icon"></i>
                     <span>Moonset</span>
                 </div>
-                <span class="sun-moon-value">@Model.Weather.Forecast[0].Astro.Moonset</span>
+                <span class="sun-moon-value">@Model?.Weather?.Forecast[0].Astro.Moonset</span>
             </div>
 
             <div class="sun-moon-item">
                 <span class="moon-phase-label">Moon phase</span>
-                <span class="sun-moon-value">@Model.Weather.Forecast[0].Astro.Moon_Illumination%</span>
+                <span class="sun-moon-value">@Model?.Weather?.Forecast[0].Astro.Moon_Illumination%</span>
             </div>
         </div>
     </div>
@@ -598,7 +603,7 @@
         <h3 class="section-title">Upcoming Departures</h3>
 
         <div class="transport-list">
-            @foreach (var transport in Model.TimeTable.Take(5))
+            @foreach (var transport in Model?.TimeTable?.Take(5) ?? Enumerable.Empty<TimeTable>())
             {
 
                 var departureTime = DateTime.Parse(transport.DepartureTime);

Program.cs

@@ -1,3 +0,0 @@
-// See https://aka.ms/new-console-template for more information
-
-Console.WriteLine("Hello, World!");

README.md

@@ -22,7 +22,7 @@ I wanted a low-power way to see weather information at a glance, so I built this
 
 # How do I get to use this without programming knowledge?
 Check in the wiki for the guide how to get everything working!
-### 😺 [Wiki Get Started Guide](https://github.com/Myxelium/Wireless_Eink_HomeScreen/wiki/Guide:-Landing-page)
+### 😺 [Wiki Get Started Guide](https://github.com/Myxelium/Wireless_Eink_HomeScreen/wiki/)
 
 ## Git Notes
 All commits has to follow this [Conventional Commits style](https://www.conventionalcommits.org/) to pass the pipeline.