Error with CrossRef plugin list (probably due wrong data in articles)

Description of issue or problem I’m having:

On a quite big journal (120 issues, 3500 articles), in the import/export CrossRef plugin (last version), we can list all articles, but when we arrive to certain page… OJS does nothing and I got the following error in logs:

PHP Fatal error:  Uncaught Error: Call to a member function getId() on null in /var/www/html/controllers/grid/submissions/ExportPublishedSubmissionsListGridCellProvider.inc.php:77
Stack trace:
#0 /var/www/html/lib/pkp/classes/controllers/grid/GridCellProvider.inc.php(56): ExportPublishedSubmissionsListGridCellProvider->getCellActions(Object(Request), Object(GridRow), Object(GridColumn))
#1 /var/www/html/lib/pkp/classes/controllers/grid/GridHandler.inc.php(1104): GridCellProvider->render(Object(Request), Object(GridRow), Object(GridColumn))
#2 /var/www/html/lib/pkp/classes/controllers/grid/GridHandler.inc.php(1011): GridHandler->_renderCellInternally(Object(Request), Object(GridRow), Object(GridColumn))
#3 /var/www/html/lib/pkp/classes/controllers/grid/GridHandler.inc.php(988): GridHandler->renderRowInternally(Object(Request), Object(GridRow))
#4 /var/www/html/lib/pkp/classes/controllers/grid/GridHandler.inc.php(1033): GridHandler->renderRowsInternally(Object(Request), Array)
#5 /var/www/html/lib/pkp/classes/controllers/grid/Gr in /var/www/html/controllers/grid/submissions/ExportPublishedSubmissionsListGridCellProvider.inc.php 
on line 77, referer: https://foojournal.org/management/importexport/plugin/CrossRefExportPlugin

Wired part is listing works fine when is done via “Search” by issue number.
I mean, I listed every volume and I got no error from there.

What I tried to resolve the issue:

When listing with different number of items by page, error appear in more or less same range of articles (24 items > fails on page 25 and 26 / but with 10 rows > fails on pages 60, 61, 62).

Listing via “Search by issue” we resubmit to CrossRef all the articles, but error persists.

Application Version

OJS 3.1.2-4

Additional information, such as screenshots and error log messages if applicable:

I suspect the error is related with wrong article’s data (probably because it was uploaded via ojs native xml import/export plugin and not much filtering was applied and is not linked to an issue?) but I’m not sure about how to trace.