Mongoose await save
Please change code with try and catch.
Also, check how to use await.
try { const newUser = new User({ 'email': req.body.email, 'name': req.body.name }); console.log('before save'); let saveUser = await newUser.save(); //when fail its goes to catch console.log(saveUser); //when success it print. console.log('after save');} catch (err) { console.log('err' + err); res.status(500).send(err);}