Fatal error: Cannot call overloaded function for non-object

Hi,

In fact whenever you edit a list such as:

wp-admin/admin.php?page=wysija_subscribers&id=5&action=editlist

From the “Edit lists” when you click “edit” it produces a blank white page, and then crashes my entire website..

Try this first please: https://support.mailpoet.com/knowledgebase/allocated-memory-size-issue/

tried, but this has not resolved the issue..

128mb memory increased
nope…sorry didn’t work, crashed the site again…have to keep restoring backup

I increased the memory to 256MB, and still crashes

I’ve been activating/deactiviating plugins, but the same result

If you could enable the wp_debug to TRUE on your wp-config.php and try to preview your newsletter again, it might show you the complete error message, and that will help us further diagnose this issue.