Hello,
Only when using PHP 8.1, I get an error when trying to export the result of report "real work monthly".

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 DoctrineCommonCollectionsArrayCollection::count() should either be compatible with Countable::count(): int, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Regards