I try to archive GA3 in matomo for wordpress with Google analytic importer but when I run the import I have this fatal error :
An error of type E_ERROR was caused in line 89 of the file /wp-content/plugins/matomo/app/core/Notification/Manager.php. Error message: Piwik\Notification\Manager::Piwik\Notification{closure}(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "Piwik\Notification" of the object you are trying to operate on was loaded before unserialize() gets called or provide an autoloader to load the class definition
Thank you in advance for any feedback,
El
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