fullJournalTransfer - Uncaught AssertionError: assert(count($journalFilters) == 1)

[joelfan]

Let me start by thanking you for the work.
Very useful idea.

But, at the moment, we get a PHP Fatal error when trying to use the plugin. The error is:
PHP Fatal error: Uncaught AssertionError: assert(count($journalFilters) == 1)

It seems that a library call does not return the $journalFilters array which is set in the instruction:
if ($isImport) { $journalFilters = $filterDao->getObjectsByGroup('native-xml=>journal'); } else { $journalFilters = $filterDao->getObjectsByGroup('journal=>native-xml'); }

We are trying to export from an OJS 3.3.0.21 running on Windows11 to an OJS 3.3.0.21 running on RedHat 8, but unfortunately the export process stops very soon. The command we are using is:
php -d memory_limit=-1 tools/importExport.php FullJournalImportExportPlugin export export20251217.gz dc

Is this due to the Windows platform?
Is it due to any missing library?

Thanks a lot in advance for your help