Complianz plugin

Hello,

we use Complianz as a GDPR/Cookie-Constent Plugin on our website. Yesterday, the plugin caused a critical error, resulting in our website being unavailable until I was able to deactivate the plugin. We have been using the plugin for several years and never had problems. I am not sure what was causing the error. I got a note along these lines:

“This Plugin could not be loaded properly and was stopped. An error of Type E_COMPILE_ERROR was found in line 45 of the file /…/wp-content/plugins/complianz-gdpr/integration/plugins/forminator-addon-slass.php. Error message: Cannot override final method Forminator_Addon_Abstract : : get_instance()

As I am not so versed with this topic, can anyone help me on what caused the error (not sure if it is an error on my side) and how i can eliminate it?

Thanks!

The page I need help with: [log in to see the link]