Fatal error: Uncaught Error: Call to a member function exportButtons() on null in C:\dolibarr\www\LevEnt1\storage\framework\views\36914803c94d6a0bc70fefa27077f14f4b982c2a.php:1 Stack trace: #0 {main} thrown in C:\dolibarr\www\LevEnt1\storage\framework\views\36914803c94d6a0bc70fefa27077f14f4b982c2a.php on line 1