sometimes, mongodb doesn't fetch any data and return this error message
<h4>A PHP Error was encountered</h4>
<p>Severity: Core Warning</p>
<p>Message: Module 'mongo' already loaded</p>
<p>Filename: Unknown</p>
<p>Line Number: 0</p>
<p>Backtrace:</p>
UI also affected because of this error. can i make change anything in library file?. Any solution appreciated.