Noticing this in 1.32.0-wmf.20:
#0 /srv/mediawiki/php-1.32.0-wmf.20/extensions/EducationProgram/includes/pagers/StudentPager.php(116): MWExceptionHandler::handleError(integer, string, string, integer, array, array) #1 /srv/mediawiki/php-1.32.0-wmf.20/extensions/EducationProgram/includes/pagers/EPPager.php(466): EducationProgram\StudentPager->getFormattedValue(string, NULL) #2 /srv/mediawiki/php-1.32.0-wmf.20/extensions/EducationProgram/includes/pagers/EPPager.php(114): EducationProgram\EPPager->formatValue(string, NULL) #3 /srv/mediawiki/php-1.32.0-wmf.20/includes/pager/IndexPager.php(445): EducationProgram\EPPager->formatRow(stdClass) #4 /srv/mediawiki/php-1.32.0-wmf.20/includes/pager/TablePager.php(69): IndexPager->getBody() #5 /srv/mediawiki/php-1.32.0-wmf.20/extensions/EducationProgram/includes/rows/Student.php(33): TablePager->getBody() #6 /srv/mediawiki/php-1.32.0-wmf.20/includes/cache/CacheHelper.php(297): EducationProgram\Student::getPager(RequestContext) #7 /srv/mediawiki/php-1.32.0-wmf.20/includes/specials/SpecialCachedPage.php(148): CacheHelper->getCachedValue(string, array, NULL) #8 /srv/mediawiki/php-1.32.0-wmf.20/extensions/EducationProgram/includes/specials/SpecialStudents.php(33): SpecialCachedPage->addCachedHTML(string, RequestContext) #9 /srv/mediawiki/php-1.32.0-wmf.20/includes/specialpage/SpecialPage.php(569): EducationProgram\SpecialStudents->execute(NULL) #10 /srv/mediawiki/php-1.32.0-wmf.20/includes/specialpage/SpecialPageFactory.php(581): SpecialPage->run(NULL) #11 /srv/mediawiki/php-1.32.0-wmf.20/includes/MediaWiki.php(288): MediaWiki\Special\SpecialPageFactory->executePath(Title, RequestContext) #12 /srv/mediawiki/php-1.32.0-wmf.20/includes/MediaWiki.php(868): MediaWiki->performRequest() #13 /srv/mediawiki/php-1.32.0-wmf.20/includes/MediaWiki.php(525): MediaWiki->main() #14 /srv/mediawiki/php-1.32.0-wmf.20/index.php(42): MediaWiki->run() #15 /srv/mediawiki/w/index.php(3): include(string) #16 {main}