How to export / import & replace assigments?

Dear,

When i try to have reports ( Gantt planning ) and select main projet i've got red box with :

ERROR : foreach() argument must be of type array|object, null given
   in jsonPlanning_pdf.php
   at line 359

log : 2023-12-05 08:45:59.395 ***** ERROR ***** [V11.0.2] ERROR *****
2023-12-05 08:45:59.395 ***** ERROR ***** [V11.0.2] on file '/var/www/projeqtor/tool/jsonPlanning.php' at line (947)
2023-12-05 08:45:59.396 ***** ERROR ***** [V11.0.2] cause = foreach() argument must be of type array|object, null given
2023-12-05 08:46:04.124 ***** ERROR ***** [V11.0.2] ERROR *****
2023-12-05 08:46:04.124 ***** ERROR ***** [V11.0.2] on file '/var/www/projeqtor/tool/jsonPlanning.php' at line (947)
2023-12-05 08:46:04.125 ***** ERROR ***** [V11.0.2] cause = foreach() argument must be of type array|object, null given
2023-12-05 08:46:25.453 ***** ERROR ***** [V11.0.2] ERROR *****
2023-12-05 08:46:25.454 ***** ERROR ***** [V11.0.2] on file '/var/www/projeqtor/tool/jsonPlanning.php' at line (947)
2023-12-05 08:46:25.454 ***** ERROR ***** [V11.0.2] cause = foreach() argument must be of type array|object, null given
2023-12-05 08:46:29.910 ***** ERROR ***** [V11.0.2] ERROR *****
2023-12-05 08:46:29.910 ***** ERROR ***** [V11.0.2] on file '/var/www/projeqtor/tool/jsonPlanning_pdf.php' at line (359)
2023-12-05 08:46:29.910 ***** ERROR ***** [V11.0.2] cause = foreach() argument must be of type array|object, null given
If i select single project, it was working yesterday, but emplty screen today : nothing.

LR

I cheched and add name for all ressources and user but it seems to be the same.

reboot done and cache clear ... all is the same !!!

nothing happen when i click on view and if i click on pdf :
red box with
ERROR : foreach() argument must be of type array|object, null given
in jsonPlanning_pdf.php
at line 359

I try with "initial" on all resources (one missing) , view alway display nothing but pdf work on some project but not all some with red display

LR