[SOLVED] Error exporting real work report to CSV

2022-09-26 13:08:33.402 => 0.075 ***** ERROR ***** [V10.0.6] ERROR *****
2022-09-26 13:08:33.402 => 0.000 ***** ERROR ***** [V10.0.6] on file '/opt/ipmp-frrns/projeqtor/external/HtmlPhpExcel/vendor/doctrine/collections/lib/Doctrine/Common/Collections/ArrayCollection.php' at line (277)
2022-09-26 13:08:33.402 => 0.000 ***** ERROR ***** [V10.0.6] cause = Return type of Doctrine\Common\Collections\ArrayCollection::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice