Error from scheduler function

Hi bkayne,
The function scheduler_form_node_type_form_builder() is added in scheduler_form_node_type_form_alter(). This will depend on whether the node type is enabled for scheduler. Could it be that your site has changed configuartion? What is the entity type and it is enabled for scheduling? Maybe the custom module is adding that function without checking? I can't help much more, as I can't see the site. If it happens again, can you save the backtrace to see which function initiates this error?

Closing this as no response after two months.