I tried to run it and it said an error like the title. and this is my code:
const URI = process.env.MONGODB_URL;
mongoose.connect(URI, {
   useCreateIndex: true, 
   useFindAndModify: false, 
   useNewUrlParser: true, 
   useUnifiedTopology: true 
}, err => {
   if(err) throw err;
   console.log('Connected to MongoDB!!!')
})
I set the MONGODB_URL in .env :
MONGODB_URL = mongodb+srv://username:<password>@cluster0.accdl.mongodb.net/website?retryWrites=true&w=majority
How to fix it?
 
     
     
     
     
     
     
     
    
 
     
     
     
     
     
     
     
     
     
     
     
     
    
 
     
     
     
     
     
     
     
     
    