Update index.js

should import DEBUG

index.js

@@ -1,7 +1,7 @@
 import express, { json, urlencoded } from 'express';
 import { completions, chatCompletions } from './routes.js';
 import { corsMiddleware, rateLimitMiddleware } from './middlewares.js';
-import { SERVER_PORT } from './config.js';
+import { DEBUG, SERVER_PORT } from './config.js';
 
 let app = express();
 
@@ -30,4 +30,4 @@ app.post("/v1/chat/completions", chatCompletions);
 // Start server
 app.listen(SERVER_PORT, () => {
     console.log(`Listening on ${SERVER_PORT} ...`);
-});
+});