Done!

controllers/auth.js

@@ -224,6 +224,7 @@ module.exports.postSignin = async (req, res, next) => {
     console.log("req.body", req.body);
     let user = await User.findOne({ email });
     if (isGoogle) {
+      if (user) {
         user.isVerified = true;
         user = await user.save();
         const isMatched = await bcrypt.compare(password, user.password);
@@ -239,6 +240,13 @@ module.exports.postSignin = async (req, res, next) => {
           });
           return;
         }
+      } else {
+        res.json({
+          message: "User Doesn't Exists",
+          type: "error",
+        });
+        return;
+      }
     } else {
       if (user) {
         if (user.isVerified) {