Upgrading Drupal

IHello.
I have few sites in a drupal 8 multisite installation.
I have updated the core via composer to v8.6.3 and updated the database of one of the sites.
I didn't realize that I have to update the database of each site.

I am on a debian 9 server and git is asking for username

what should I do?

Package operations: 19 installs, 2 updates, 0 removals
  - Installing drupal/coder (8.3.1):     Authentication required (git.drupal.org):
      Username:

Hello, all.

Can someone help?

I got the message bellow when I update dp 8.6.2 to 8.6.3 via drush.

Update process seemed correctly.

But after update open the top page, I got the error message.

No html content is shown except error message.

Sorry my poor English.

Thanks.

=== error message : ===

update.php - The website encountered an unexpected error. Please try again later.

Error in weblog:

Hi I've run into an issue when running upgrade of database of what I believe is associated with:

System module -

Update all entity displays that contain extra fields.  

or

 Force cache clear for language item callback.   @see https:www.drupal.orgnode2851736

  Force cache clear to ensure aggregated JavaScript files are regenerated.   @see https:www.drupal.orgprojectdrupalissues2995570

Current Website:

PHP 7.2.10    (php -v)
ubuntu 18.04.1 LTS bionic    (lsb_release -a)
Apache 2.4.29    (apache2 -v)
Drupal 7.61     (drush status)
Drush 6.2.0     (drush status)
Mysql Ver 14.14 Distrib 5.7.24   (mysql -V)

When I run (on the command line): drush status I get 21 identical lines of:

count(): Parameters must be an array or an object that implements Countable Table.php: 699

Assuming that Drupal 7.61 is complete for PHP 7.2 then these messages must come from modules (not CORE)?