Drupal 8.x

I installed a Drupal 8 site in June (sfwalk.net) as a way of learning the platform, and just tried to follow this procedure to update to 8.1.8.

I follow the procedure exactly, including copying over my existing settings.php file and setting permissions.

I get the following messages from Drush:

Hi,
I would like to help for free an association of jobless to manage their own internal jobs selection.

They'd like to have a history of each candidate based on his interaction with the association (the should know to how may formation event the candidate had participate, and with which score) that apply to a job place.

Hello,

I'm trying to install my first multisite. So in my var/www/html i unziped drupal, and then in sites i created a filder site1 with a setting.php. After that i created a symlink in /var/www/html/drupal/ (ln -s drupal site1) BUT i got this error when im searching localhost/drupal/site1 on chrome :

Forbidden

You don't have permission to access /drupalAout/site1 on this server.

Any idea ?

PS : i did a chmod -R 777 drupal

Thanks.

Hi Drupal community.
Need a little help with Drupal 8. I write a module that will be to create a video background. I make it through the module that creates a block. This block is displayed only on a few pages, and therefore I list where output.
Problem.
I wrote a js. Connect it through .libraries.yml

  dependencies:
    - core/jquery
  js:
   js/video.js: {}

then I deduce respectively Plugin Block this library

Hi,

I have big problems styling drupal. Everything I touch doesn't work! I am completely stuck.

1. Subtheming Bartik.
I created a subtheme and the style.css I added doesn't load.

Hello all,

I am wondering why I get this error as I am trying to install a theme:

An error has occurred.
Please continue to the error page

An AJAX HTTP error occurred.
HTTP Result Code: 403
Debugging information follows.
Path: /core/authorize.php/core/authorize.php?batch=1&id=3&op=do_nojs&op=do
StatusText: Forbidden
ResponseText:
403 Forbidden
403 Forbidden
nginx/1.6.3

This is Drupal 8 running on nginx v1.6.3 on Centos 7.

Thanks in advance for any and all help.