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My client upgraded their WordPress site to use the latest GiveWP version a couple of hours ago. After the update, the admin side crashed and is only giving this error:
Fatal error: Declaration of DI Container::has(Sname) must be compatible with Psr|Container ContainerInterface: has(string Sid): bool in /customers/b/a/1/hevoskansa.com/httpd.www/wp-content/plugins/ matomo/app/vendor/php-di/php-di/sre/Container.php on line 210WordPress and all the other plugins are up to date. Matomo plugin’s version is 4.15.2. No other plugins, themes, or core was updated at the same time. Only the GiveWP plugin M.
When deactivating the GiveWP plugin (renaming the plugin folder with SSH), the WP admin starts working again.