Strict Standards: Only variables should be passed by reference in /home/admin4/web/yes-mp3.com/public_html/engine/modules/ks_pdf/init.php on line 16

Fatal error: Uncaught exception 'Mpdf\MpdfException' with message 'Unable to set PDF file protection, CSPRNG Functions are not available. Use paragonie/random_compat polyfill or upgrade to PHP 7.' in /home/admin4/web/yes-mp3.com/public_html/vendor/mpdf/mpdf/src/Pdf/Protection/UniqidGenerator.php:11
Stack trace:
#0 /home/admin4/web/yes-mp3.com/public_html/vendor/mpdf/mpdf/src/ServiceFactory.php(69): Mpdf\Pdf\Protection\UniqidGenerator->__construct()
#1 /home/admin4/web/yes-mp3.com/public_html/vendor/mpdf/mpdf/src/Mpdf.php(1044): Mpdf\ServiceFactory->getServices(Object(Mpdf\Mpdf), Object(Psr\Log\NullLogger), Array, 0, Object(Mpdf\Language\LanguageToFont), Object(Mpdf\Language\ScriptToLanguage), NULL, NULL, NULL, NULL)
#2 /home/admin4/web/yes-mp3.com/public_html/engine/modules/ks_pdf/init.php(40): Mpdf\Mpdf->__construct(Array)
#3 /home/admin4/web/yes-mp3.com/public_html/engine/cache/system/plugins/2f22b80230b8940bc33c1189d4d05fb5.php(2464): require_once('/home/admin4/we...')
#4 /home/admin4/web/yes-mp3.com/public_html/engine in /home/admin4/web/yes-mp3.com/public_html/vendor/mpdf/mpdf/src/Pdf/Protection/UniqidGenerator.php on line 11