Fatal error: Uncaught Error: Interface "Mike42\Escpos\PrintBuffers\PrintBuffer" not found in /var/www/html/vendor/mike42/escpos-php/src/Mike42/Escpos/Experimental/Unifont/UnifontPrintBuffer.php:21 Stack trace: #0 {main} thrown in /var/www/html/vendor/mike42/escpos-php/src/Mike42/Escpos/Experimental/Unifont/UnifontPrintBuffer.php on line 21