Blank website after updating to joomla 3.9
How to fix the issue of blank page after updating to joomla 3.9.
Go to Global Configuration and set the error reporting Maximum and reload the blank page.
You will see an error modules/mod_tc_gallery/core/helper.php line 12.
In line 12 there is : require_once JPATH_SITE.'/libraries/joomla/filesystem/folder.php';
The error is due to this file is deprecated in Joomla 3.9
The fix is in file modules/mod_tc_gallery/core/helper.php delete the line 12.
After deleting this line, refresh your website.