PHP with updated theme

Hi, I update the theme, but it doesn’t work with verio 7.4 of PHP
If I work with PHP 7.0 everything is ok, but if I increase to PHP 7.4, I can´t edit the page.
In the file “error.log”, the message is this:

[05-Jun-2023 07:52:19 UTC] PHP Warning: file_exists(): open_basedir restriction in effect. File(/mnt/webv/d2/66/56859966/htdocs/clinicadental32/wp-content/themes/fortuna/dynamic.css) is not within the allowed path(s): (/home/psicoasi:/home2/psicoasi:/usr/local/wepanel/filemanager:/usr/lib/php:/usr/local/lib/php:/tmp:/usr/local/bin/wp:/usr/local/bin/composer:/opt/alt/php74) in /home/psicoasi/public_html/clinicadental32.com/wp-content/themes/fortuna/includes/ext/option-tree/includes/ot-functions.php on line 255