Warning: require_once(Crypt/GPGAbstract.php): Failed to open stream: No such file or directory in /usr/local/www/roundcube/vendor/pear/crypt_gpg/Crypt/GPG/KeyGenerator.php on line 38

Fatal error: Uncaught Error: Failed opening required 'Crypt/GPGAbstract.php' (include_path='.:/usr/local/share/pear') in /usr/local/www/roundcube/vendor/pear/crypt_gpg/Crypt/GPG/KeyGenerator.php:38 Stack trace: #0 {main} thrown in /usr/local/www/roundcube/vendor/pear/crypt_gpg/Crypt/GPG/KeyGenerator.php on line 38