Core: Error handler (FE): PHP Warning: count(): Parameter must be an array or an object that implements Countable in /typo3/sysext/frontend/Classes/View/AdminPanelView.php line 729
I receive this error on the admin panel.
#3 Updated by Alexander Averbuch about 2 years ago
I installed TYPO3 9.0.0 with composer.
Then I installed the preconfigured distribution (Introduction)
I'm logged in as admin in the backend, call the start page, and find the error in the log.
When I call any other page, can I find this entry in the log.
The admin panel is deactivated (the red switch)
The problem doesn't exist in 9.1.0-dev