You must set the policy of ImageMagick to allow PDF read. See https://stackoverflow.com/questions/52703123/override-default-imagemagick-policy-xml × تجاهل هذا الإشعار

ImagickException: unable to write blob '/tmp/magick-uBJ41IeRRGV9g1mT7gKk0dn67HG6rQsn': Disk quota exceeded @ error/blob.c/BlobToFile/406 in /home/masterclassonlin/public_html/e/mod/securepdf/view.php:98 Stack trace: #0 /home/masterclassonlin/public_html/e/mod/securepdf/view.php(98): Imagick->readImageBlob() #1 {main}