I have a multi-site Drupal 9 setup, created without composer. When trying to install the Mobile Detect module, I receive the following error:
Error: Class 'Detection\MobileDetect' not found in Drupal\Component\DependencyInjection\Container->createService() (line 257 of core/lib/Drupal/Component/DependencyInjection/Container.php).
I'm guessing this relates to the placement of the Mobile_Detect.php library, but I've variously tried the following locations without success:
The Mobile Detect module's README.txt indicates that some of the above locations should work. However, the error is such that the site is rendered unusable - no admin pages can be accessed; flushing cache via Drush won't work (error message is display in shell); deleting the module results in a 'module not found' error. The only way to resurrect the site is to roll back the database using a backup.
Do you have any advice on where the Mobile_Detect.php should be located in Drupal 9, and should the README.txt file be update to reflect this?
Install Mobile Detect module on Drupal 9 via 'Install new module' UI (without using composer); download and place Mobile_Detect library manually according to README.txt advice.
Fixed
2.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Now Mobile Detect does not work for 10.1.3 Drupal version. Problem :(
Re: #23
If you are using Ludwig to manage your library dependencies (instead of Composer) and you are also using the latest 3.0.x-dev version of Mobile Detect you may need the patch #2 from related issue.