many fixes resultnig from latest refactoring

src/routes/user.routes.ts

@@ -45,7 +45,6 @@ fs.mkdir(avatarUploadDir, { recursive: true }).catch(err => {
 const avatarStorage = multer.diskStorage({
   destination: (req, file, cb) => cb(null, avatarUploadDir),
   filename: (req, file, cb) => {
-    const user = req.user as User;
     const uniqueSuffix = `${(req.user as UserProfile).user.user_id}-${Date.now()}${path.extname(file.originalname)}`;
     cb(null, uniqueSuffix);
   },