This is a puzzling problem. I work locally on my drupal 8 site and deploy to a production server via Capistrano. I just recently upgraded locally to 8.3.1 and the upgrade went smoothly. I exported the config and committed the code to my git repo as usual. I then deployed to my production server via capistrano. The code deployed without fail. When I attempt to drush cim, i get the following error:
Hoping someone can help us out - we're trying to update core to 8.3 using composer (from within Homestead/Vagrant VM running on Windows). We have three dev PCs and two updated fine, but one refuses to cooperate;
Running composer install displays a warning for every module: Class Drupal\Core\Composer\Composer is not autoloadable, cannot call post-package-install script
And then when it gets to drupal/core the entire process fails with a RuntimeException. It seems to download ok (100%) but then fails with this message:
Hi! I have a non-profit website, www.bridesmaidshare.com. Last week I realized that the site was down. I contacted my provider Dreamhost and they said it didn't look like anything on their end was wrong but saw that the site had recently been updated - which I don't think I did.
Now when I go to the site it says "Welcome to your new Drupal website!" and asks me to login, but doesn't accept my login info.