Dev Tips#06 Oracle SQL Developer launch error Could not install some mo...

Dev Tips#05 Best Software Development Books ever, A MUST HAVE

QVTO and Resolution Operations

Dev Tips#04 How to load images in express js

Mongodb: mogod lock is not empty or unclean shutdown detected

Dev Tips#03 How to use xampp on Ubuntu

Dev Tips#02 Launch and Install software on ubuntu with a mouse click

SOAP WEB SERVICE AND JDBC IN NETBEANS

MongoDB installation on Windows

Dev Tips#01 Free online Terminals and IDE

trying to open unclosed connection

When having the error, the first thing to do is to restarting your mongo database.
If the error still persist, chances are that your connection statement is as below:

var dbUrl= 'mongodb://localhost:27017/test';
mongoose.connect(dbUrl);

To solve it , change connect to createConnection

var dbUrl= 'mongodb://localhost:27017/test';
mongoose.createConnection(dbUrl);


It should be working now, if not drop me a comment and will come to your rescue...