Created the error middleware

middlewares/error.js

@@ -0,0 +1,8 @@
+module.exports = ((err, req, res, next) => {
+    if (err instanceof SyntaxError) {
+        return res.status(500).send({ message: err.message });
+    } else if (err) {
+        return res.status(500).json({message: "An internal error occurred"});
+    }
+    next();
+});