Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /home/devel7tetelem3d/public_html/app/internalmodules/setEspecialityProviderByDoctor.php:14 Stack trace: #0 /home/devel7tetelem3d/public_html/app/internalmodules/setEspecialityProviderByDoctor.php(14): array_column(NULL, 'id') #1 {main} thrown in /home/devel7tetelem3d/public_html/app/internalmodules/setEspecialityProviderByDoctor.php on line 14