Hi,
I have a working 8.0.0 Drupal experimental site on an Ubuntu 14.04 server. It runs PHP 5.5.9 and apache 2.4.7.
The day before yesterday, I got the message to upgrade to 8.0.1. I decided to give it a try, as a separate installation. It fails after having entered the valid database information.
The message says :
Error
The website encountered an unexpected error. Please try again later.
\Drupal\Core\Config\UnmetDependenciesException :

followed by a long list of Configuration objects (block.block.bartik_account_menu ... etc
some are "core.entity_form_display", others "field.field.comment.comment.comment_body" etc.

I had an easy and succesful 8.0.1 installation on an Ubuntu 15.04 where PHP is version 5.6.4 and apache 2.4.10

What shall I undertake ?
Robert

Comments

robherzog’s picture

I found that exactly the same problem was mentioned by several people in the Installation forum.
Installing php5-curl which was missing did not cure the problem.

Jons’s picture

Same issue.

I decided to try composer update (in Drupal root dir) as seemed like a possible variable area.
This failed at: '[RuntimeException] The .git directory is missing from /var/www/drupal8/vendor/jcalderonzumba/gastonjs, see https://getcomposer.org/commit-deps for more information'

But deleting vendor/jcalderonzumba/gastonjs and rerunning composer update succeeded and rerunning Drupal install completed, with a bit of encouragement.