Fatal error: Uncaught Error: Interface "Spipu\Html2Pdf\Debug\DebugInterface" not found in /var/www/Library-Exercises/01-Library/vendor/spipu/html2pdf/src/Debug/Debug.php:18 Stack trace: #0 {main} thrown in /var/www/Library-Exercises/01-Library/vendor/spipu/html2pdf/src/Debug/Debug.php on line 18