Drupal 8.x

Hello, 
After an update to version 8.6.10, I no longer access the site....
I did a manual update
I made an update.php that updated the database, but without success.... Can you help me?

I have these errors : 

The website encountered an unexpected error. Please try again later.
Error: Class 'Drupal\Core\Cache\Context\RequestFormatCacheContext' not found in Drupal\Component\DependencyInjection\Container->createService() (line 262 of core/lib/Drupal/Component/DependencyInjection/Container.php).

Hello :)

I'm new to Drupal (previously WP-User) and am trying to set up a category system with views. My Nodes are neatly sorted into them and now I realized I could make the /nodes/ID into the actual Title of that post. And there my frustration began.

I have a view called blog and the nodes are sorted ther by the tag 'blog' (simple... ) and pathauto-ing them into /blog/title does not work. - Or at least I am to obnoxious on how to archive that.

As far as I am aware there is no [view-path] as Token. so i can't apprend that to the [node:title] ...

Hi!

Hope someone more experienced can help me with the following task:

The setup:

A Taxonomy Vocabulary called "Area of work".

The vocabulary has the following associated terms: A, B, C, D, E, F, G, etc.

During registration users have to choose a department from the taxonomy list to associate themselves with.

The challenge:

I would like to create a single page view or multiple page views if necessary that displays the users that work in each department.

Hi, I'm new to Drupal 8 and am wanting to create a site that presents additional content to users who have paid a subscription or membership. I've had a look through the modules and there are a few that seem to kind of maybe support something like this, Recurly, role expire, red hen, subscription entity.

Has anyone developed anything like this? What modules can you recommend? Any tips you can share?

Thanks, Scott

[Drupal8]

I have created a content type bundle called Question, which includes few form fields and a reference entity, the structure can be found on the following image Content type structure for Question bundle

My Goal is to build a page to display random 10 questions with checkboxes that represent answers for each question (Like Simple Quiz), and then submit the form for calculation the score of the user and display it.

I'm trying to customize a content display via Twig, overriding its template. I have a field which references a content type named Post, and inside the content Type post, I have a field which references an Image from the Media module (the new one). As everyone knows, inside the Image media type there's the image field which is the image itself.

Currently, we can get the data from the content type named Post, but we can't find a way to render the Image which is inside Post. We tried to debug with Twig debug, but can't find the correct way to display it.