Improve errors reporting

virtweb_frontend/src/api/ApiClient.ts

@@ -17,7 +17,7 @@ interface APIResponse {
 
 export class ApiError extends Error {
   constructor(message: string, public code: number, public data: any) {
-    super(message);
+    super(`HTTP status: ${code}\nMessage: ${message}\nData=${data}`);
   }
 }