PHP scripts fails with the following error: Unable to load dynamic library sodium.so : cannot open shared object file: No such file or directory

Symptoms

• Certain PHP applications running on PHP 8.1.7, 8.0.20 or 7.4.30 fail with:

  PHP Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /opt/plesk/php/7.4/lib/php/modules/sodium.so (/opt/plesk/php/7.4/lib/php/modules/sodium.so: cannot open shared object file: No such file or directory), /opt/plesk/php/7.4/lib/php/modules/sodium.so.so (/opt/plesk/php/7.4/lib/php/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

Cause

Resolution

Workaround

1. Connect to the server via SSH

2. Remove/Move the leftover file:

   for PHP 8.1

   # mv /opt/plesk/php/8.1/etc/php.d/sodium.ini /root/sodium.ini_81

   for PHP 8.0

   # mv /opt/plesk/php/8.0/etc/php.d/sodium.ini /root/sodium.ini_80

   for PHP 7.4

   # mv /opt/plesk/php/7.4/etc/php.d/sodium.ini /root/sodium.ini_74

Additional information

Sodium is now packed within the Plesk shipped PHP itself and is not a separate module anymore.