I upgraded OJS from 2.4.8.1 to 3.0.2, everything worked fine.
I’d like to have some more metadata fields, so I searched the forum and found the (unfinished) Custom Metadata Plugin.
I installed this and after that OpenAIRE, to try it out.
Now when I click New Submission, OJS hangs. The error log says:
PHP Warning: Invalid argument supplied for foreach() in …/lib/pkp/classes/submission/form/PKPSubmissionSubmitStep1Form.inc.php
on line 36, referer: http://…/submission/wizard
I deleted the plugins, but is has no effect.
Can anyone help me?
The custom metadata plugin is just a concept and I have not had time to test it that much.
However, both the customMetadata plugin and the OpenAIRE plugin are using hooks in PKPSubmissionSubmitStep3Form so it is unlikely that they are causing any trouble in step 1?