fix: try get value

Signed-off-by: Polianin Nikita <wesser@noreply.git.winsomnia.net>

Endpoint/Configuration/AppConfig/EnvironmentConfiguration.cs

@@ -61,7 +61,8 @@ public static class EnvironmentConfiguration
         result.AddInMemoryCollection(LoadEnvironment(".env.develop")!);
 #endif
 
-        Environment.SetEnvironmentVariable("PATH_TO_SAVE", variablesFromFile["PATH_TO_SAVE"]);
+        if (variablesFromFile.TryGetValue("PATH_TO_SAVE", out var data))
+            Environment.SetEnvironmentVariable("PATH_TO_SAVE", variablesFromFile["PATH_TO_SAVE"]);
 
         return result.Build();
     }