database not connected MongoParseError: URI does not have hostname, domain name and tld code example

Example: MongoParseError: URI does not have hostname, domain name and tld

You should encode your password, for example, my password 
had # character in it
I used this site to convert # to hex which is 23
https://cryptii.com/pipes/hex-to-text
Now, after converting it you need to put it inside your js 
file like this %23