feature(database-connection): Fix error handling

frontend/src/models/RequestError.ts

@@ -1,3 +1,12 @@
 export default class RequestError extends Error {
-  response?: any;
+  //response?: any = "Unknown error. Please try again later.";
+  statusCode: number
+  message: string
+
+
+  constructor(statusCode: number, message: string) {
+    super(message);
+    this.statusCode = statusCode;
+    this.message = message;
+  }
 }