Some refactoring.

backend/src/main.ts

@@ -1,7 +1,7 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import supertokens from 'supertokens-node';
-import { SupertokensExceptionFilter } from './auth/auth.filter';
+import { SupertokensExceptionFilter } from './auth/filters/auth.filter';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);