I have a very old install that began with 6 and is now at 8. I'm trying to get it updated to 9 but have gotten stuck with getting the upgrade_status module to work. After it was installed via composer, I get this error when navigating to the report:
The website encountered an unexpected error. Please try again later.
InvalidArgumentException: Class "\Drupal\upgrade_status\Form\UpgradeStatusForm" does not exist. in Drupal\Core\DependencyInjection\ClassResolver->getInstanceFromDefinition() (line 24 of core/lib/Drupal/Core/DependencyInjection/ClassResolver.php).
I then tried to manually install it (very hacky) in the /modules directory to no effect.
I'm not sure if my install of Drupal is hopelessly broken and stuck at 8. I appreciate any suggestions or additional info that will help me troubleshoot it.
Thx,
composer requiredidn't work?composer require drupal/upgrade_statusand after that it appeared in the reports page, but clicking on the link navigated to the above exception.composer clear-cache(and also restarted Apache) but get the same error. However, the folders that are listed when clearing are in~/.cache/composer/. I also have a clean Drupal 9 site in a sibling directory to the Drupal 8 site. Could having these two on the same machine be an issue? Or could a mis-configuration cause them to stomp on each other in some way?upgrade_statuswith composer, did you install the module (from the admin interface ordrush en upgrade_status) and did you clear the Drupal cache (from the admin interface ordrush cr)? I don't think clearing composer cache will solve your issue.