sec fixes

src/server.ts

@@ -1,4 +1,5 @@
 import express, { Request, Response } from 'express';
+import express, { Request, Response } from 'express';
 import path from 'path';
 import fs from 'fs';
 import ffmpeg from 'fluent-ffmpeg';
@@ -198,7 +199,7 @@ app.get('/health', (req: Request, res: Response) => {
 });
 
 // Error handler
-app.use((err: Error, req: Request, res: Response) => {
+app.use((err: Error, req: Request, res: Response, next: any) => {
     console.error(err.stack);
     res.status(500).json({ error: 'Something went wrong!' });
 });