System: ILIAS v5.4.12 2020-05-29 on Ubuntu 18.04.4 LTS x86_64
When exporting an exam's results as an Excel spreadsheet an error occurs reproducibly and the intended file is not being saved. Nginx's error.log file shows:
==> ilias/ilias.log <== [l11ft] [2020-06-10 08:09:05.178964] iliasclient1_root.ERROR: ilErrorHandling::{closure}:50 2 Declaration of ilAssExcelFormatHelper::setCell($a_row, $a_col, $a_value) should be compatible with ilExcel::setCell($a_row, $a_col, $a_value, $a_datatype = NULL) in /var/www/html/ilias/Modules/TestQuestionPool/classes/class.ilAssExcelFormatHelper.php:10
#0 /var/www/html/ilias/Services/Init/classes/class.ilErrorHandling.php(461): Whoops\Run->handleError(2, 'Declaration of ...', '/var/www/html/i...', 10)
#1 /var/www/html/ilias/Modules/TestQuestionPool/classes/class.ilAssExcelFormatHelper.php(10): ilErrorHandling->handlePreWhoops(2, 'Declaration of ...', '/var/www/html/i...', 10, Array)
#2 /var/www/html/ilias/Modules/Test/classes/class.ilTestExport.php(338): require_once('/var/www/html/i...')
#3 /var/www/html/ilias/Modules/Test/classes/class.ilTestEvaluationGUI.php(755): ilTestExport->exportToExcel(true, '', '', false)
#4 /var/www/html/ilias/Modules/Test/classes/class.ilTestEvaluationGUI.php(97): ilTestEvaluationGUI->exportEvaluation()
#5 /var/www/html/ilias/Services/UICore/classes/class.ilCtrl.php(210): ilTestEvaluationGUI->executeCommand()
#6 /var/www/html/ilias/Modules/Test/classes/class.ilObjTestGUI.php(877): ilCtrl->forwardCommand(Object(ilTestEvaluationGUI))
#7 /var/www/html/ilias/Modules/Test/classes/class.ilObjTestGUI.php(320): ilObjTestGUI->forwardToEvaluationGUI()
#8 /var/www/html/ilias/Services/UICore/classes/class.ilCtrl.php(210): ilObjTestGUI->executeCommand()
#9 /var/www/html/ilias/Services/Repository/classes/class.ilRepositoryGUI.php(348): ilCtrl->forwardCommand(Object(ilObjTestGUI))
#10 /var/www/html/ilias/Services/Repository/classes/class.ilRepositoryGUI.php(310): ilRepositoryGUI->show()
#11 /var/www/html/ilias/Services/UICore/classes/class.ilCtrl.php(210): ilRepositoryGUI->executeCommand()
#12 /var/www/html/ilias/Services/UICore/classes/class.ilCtrl.php(175): ilCtrl->forwardCommand(Object(ilRepositoryGUI))
#13 /var/www/html/ilias/ilias.php(20): ilCtrl->callBaseClass() #14 {main} ==> nginx/error.log <== 2020/06/10 08:09:05 [error] 16329#16329: *14532
FastCGI sent in stderr: "PHP message: Declaration of ilAssExcelFormatHelper::setCell($a_row, $a_col, $a_value) should be compatible with ilExcel::setCell($a_row, $a_col, $a_value, $a_datatype = NULL)" while reading response header from upstream, client: 192.168.223.14, server: klausur.mi.hdm-stuttgart.de, request: "POST /ilias/ilias.php?ref_id=654&active_id=14543&cmd=post&cmdClass=iltestevaluationgui&cmdNode=u3:or:10b&baseClass=ilrepositorygui&fallbackCmd=exportEvaluation&rtoken=b3c94033fd7f665228d202c424e976d8 HTTP/2.0", upstream: "fastcgi://unix:/var/run/php/php7.2-fpm.sock:", host: "klausur.mi.hdm-stuttgart.de", referrer: "https://klausur.mi.hdm-stuttgart.de/ilias/ilias.php?ref_id=654&cmd=outEvaluation&cmdClass=iltestevaluationgui&cmdNode=u3:or:10b&baseClass=ilrepositorygui"
BTW: Its a pity you disallow <pre> elements in this forum