Minor changes

src/models/token.js

 tokenSchema.statics.findByCredentials = async (email, password) => {
     const user = await User.findOne({email})
     if(!user) {
-        throw new Error('Login unsuccessfull!')
+        return
     }
 
     const checkMatch = await bcrypt.compare(password, user.password)
     console.log(user.password)
     console.log(checkMatch)
     if(!checkMatch) {
-        return
+        return user
     }
     return user
 }

src/routers/token.js

 router.get('/login', async (req, res) => {
     const findUser = await Token.findByCredentials(req.body.email, req.body.password)
     if(!findUser) {
-        return res.status(400).send('Invalid credentials!')
+        return res.status(400).send('User does not exist, wrong email')
     }
 
     const isValidPassword = await bcrypt.compare(req.body.password, findUser.password)
     if(!isValidPassword) {
-        return res.status(400).send("Email or password is incorrect!")
+        return res.status(400).send('Password is incorrect!')
     }
     
     return res.send(findUser)

src/routers/user.js

     }
 })
 
-router.post('/users/login', async (req, res) => {
-    try {
-        const user = await User.findByCredentials(req.body.email, req.body.password)
-        if(!user) {
-            return res.status(400).send('Invalid email or password!')
-        }
-        console.log(user)
-        const token = await user.generateAuthToken()
-        console.log(token)
-        return res.send(user)
-    } catch(e) {
-
-    }
-})
-
 module.exports = router