Drupal 8.x

I have a Drupal 8.8.2 project who is work fine in local environement and now that I have put it on prod serveur, I have this error when I'm try to log in the admin :

Hello,

Has anybody seen a module that allows me to create Notebooks and in every notebook multiple pages?

Kind of like what Evernotes does?

Thanks.

Hi, My client want to attach each webform created to specific user with role( Jury ). Then , when the user log in he see all his webforms and he can manage the submissions and set up note. e.g: I attach the webform (apply 1 ) to Alex , the webform (apply 2) to Jack. When Alex log in; he see the webform (apply 1) than he manage all submissions of apply 1 and set up a score or note for each one. How can I apply this scenario with the webform module in Drupal 8. 

For those of us just starting out with Drupal, would it be possible to use the D9 alfa and get the Olivero theme Even though still in the final stages of development? With only a few months to go before the official launch for those of us working on creating a new website this would seem the logical course to take. Perhaps something similar to the Windows insider program. If the new theme is as great as it seems to be, this would avoid having to transition and save time. As opposed to learning one system that will be short lived and then switch to something new.   Thanks

Good day, I began to study with Drupal and am making a website with different types of content (announcements, news, pictures ...) for different regions (cities, villages, countries ..)

Using the built-in module of taxonomy, I created a list of villages, through the built-in module, views created several pages, created content with binding to a taxonomy, and on the side of the site I displayed a global filter (block) based on the external module simple_global_filter-8.x-1.3

$variables['node']->get('field_myboolfield')->getValue();

Because it just does not work. The array returned is empty.

In my content I have another boolean field that was made before me with the same type and settings. And guess what - it works! Even if I edit it - it still works!

But freshly new added field - does not!