MongoParseError: URI malformed, cannot be parsed

I can't find the problem on the connection, as it seems to be from there. Thats the error I get. At the right side is shown the Database data. https://gyazo.com/152c31e3e141dc18a1bfe7e744f67e6e

I just copy all the files, run npm install, then go to config.json and change the fields and this error occurs, does anybody know why is this happening?