Sometimes, due to a PHP error, a Joomla Extension can stop working and, without displaying an error, lead you to a blank page. Remember a White Page is just an Error Page where the error message has been suppressed by your configuration.
In that case, to find out why, do following:
1. Check server error logs (not access logs) if you have access to them. (cPanel or other control panels often allow this)
2. Go to Joomla Administration → Global configuration and enable Error Reporting to Maximum, you can also turn on debugging. – try the action again – if you still get a blank page then goto 3
3. Put the following code at the END of the configuration.php file BEFORE the closing ?>
ini_set( 'display_errors', true );
error_reporting( E_ALL );
Check the source of the white page – there might be still some HTML/Errors in the Page Source (Look in your web browser for the “View Source” option). One of these should give you a nice detailed error message
Once we got the error we can go for fix the issue.
Thank you,