Cannot Export XML in OJS 3.2

Software Support
1

I got 500 error code when i try to export xml

dfreg
dfreg1175×593 21.5 KB

then, i checked the error log:
[29-Aug-2023 13:00:49 UTC] PHP Fatal error: Uncaught Error: Call to undefined method Submission::getIssueId() in /home/ejournpo/public_html/plugins/importexport/doaj/filter/DOAJXmlFilter.inc.php:62
Stack trace:
#0 /home/ejournpo/public_html/lib/pkp/classes/filter/Filter.inc.php(449): DOAJXmlFilter->process(Array)
#1 /home/ejournpo/public_html/classes/plugins/PubObjectsExportPlugin.inc.php(366): Filter->execute(Array, true)
#2 /home/ejournpo/public_html/classes/plugins/PubObjectsExportPlugin.inc.php(190): PubObjectsExportPlugin->exportXML(Array, ‘article=>doaj-x…’, Object(Journal), false)
#3 /home/ejournpo/public_html/plugins/importexport/doaj/DOAJExportPlugin.inc.php(198): PubObjectsExportPlugin->executeExportAction(Object(Request), Array, ‘article=>doaj-x…’, ‘exportSubmissio…’, ‘articles’, false)
#4 /home/ejournpo/public_html/classes/plugins/PubObjectsExportPlugin.inc.php(171): DOAJExportPlugin->executeExportAction(Object(Request), Array, ‘article=>doaj-x…’, ‘exportSubmissio…’, ‘articles’, false)
#5 /home/ejournpo/public_html/plugins/importe in /home/ejournpo/public_html/plugins/importexport/doaj/filter/DOAJXmlFilter.inc.php on line 62

2

What is your exact 3.x version?

Looks very similar to this issue:

That was patched in 3.2.0-4.

Anyway, upgrade to the last LTS is always a good idea.