Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /apps/var/www/html/spip/lib/fpdf17/fpdf.php:526 Stack trace: #0 /apps/var/www/html/spip/lib/fpdf17/fpdf.php(526): in_array('helvetica', NULL) #1 /apps/var/www/html/spip/lib/fpdf17/tutorial/tuto5.php(94): FPDF->SetFont('helvetica', '', 14) #2 {main} thrown in /apps/var/www/html/spip/lib/fpdf17/fpdf.php on line 526