Added a null check condition.

csharp/App/SaliMax/src/Program.cs

@@ -828,6 +828,8 @@ internal static class Program
 
     private static void ApplyConfigFile(this StatusRecord status, Configuration? config)
     {
+        if (config == null) return;
+        
         status.Config.MinSoc = config.MinimumSoC;
         status.Config.GridSetPoint = config.GridSetPoint * 1000; // converted from kW to W
         status.Config.ForceCalibrationChargeState = config.CalibrationChargeState;