Drupal 8.x

Hello everybody,
I'm supposed to create a website for a client and I'm wondered which version of Drupal to use : Drupal 7 or 8. After reading the client's list of needs, here are the features I have to implement :

I am trying to create/add a custom tab (local task) to a view with 4 pages. Each view page has a views tab. For example, I have a view called team members. The team members are divided into 4 categories/pages within the view with a corresponding tab. The views default tab path is /team.

I want to add a fifth custom tab that allows a user to create/add a new team member via the existing link /node/add/team.

I created a custom module called team. I have:

I have Drupal 8 installed and am using the Bartik 8.0.5 theme. I was able to create a custom block and display it in the Sidebar second region. How to I include a custom menu in that block. The menu has also been created and has links associated with it.

I’ve been doing some research into caching solutions for Drupal sites running on a LAMP server. I’ve looked into module solutions such as Boost, and I understand the performance gains here come almost exclusively from serving up static HTML directly from the server’s local disc. I’m worried that implementing a solution like this into my development process may cause some issues with those parts of the site that require server-side scripting to function.

I try to solve a great error 500!

As explained in the title of my post, I was beginning to parameterize the display of my form for a specific content type. So I started to create groups of fields, put the classes ...

An empty cache, hop, and I'll see what it look like on front.
A priori a few changes to make ...

So I return to my admin (/admin/structure/types/manage/mytype/form-display) ...
But a beautiful error 500 appears: - / aaaaaahhhhh !!!!

The funnyest thing is that this error ONLY appears for this type of content ...

Hi,

I don't know why but i've tried to do a simple hello world module to learn how to deal with twig but it isn't work. When i access to http://localhost/LearningDrupal/hello_world i've only show the title of the module. I didn't know why it's not work, can you help me please ?