Notifications not clearing

Submitted by Tick Tocks Tim on

I have 3 notifications that when I acknowledge I get the following error;

Array ( [error] => Validation error [code] => 2003 [errors] => Array ( => form_error_messages.source_type.default )

They were long messages.  I have tried on my mobile and desktop to clear these but I can't manage to get that to happen.

Can you help?