Failed Ajax request or invalid JSON returned 500 internal Server Error

I’m trying to add/edit an item in the Submission Preparation Checklist and I’m getting this error. Can someone help me?

Screenshot from 2021-09-10 20-17-01
Screenshot from 2021-09-10 20-18-23

Application Version - e.g., OJS 3.3.0-8:

Hi @Luis_Gustavo,

Do you see anything in your PHP error logs that points to an issue here? Usually that provides more of a clue of what is happening.

-Roger
PKP Team

Hi @rcgillis
I have the same problem for 1 of our OJS sites [ojs 3.3.0-8]. There is only a warning no error:

[15-Dec-2021 09:49:26 America/Edmonton] PHP Warning:  Declaration of SubmissionChecklistForm::initData($args) should be compatible with Form::initData() in /var/www/sites/ojs/lib/pkp/controllers/grid/settings/submissionChecklist/form/SubmissionChecklistForm.inc.php on line 41

My problem was that display_errors was turned on. This outputs a warning not visible to the user in the checklist and therefore screws up the json format.

Jeremy

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