Call to a member function insert() on null in Drupal\Core\Lock\DatabaseLockBackend->acquire() after code upgrade to 11.1

It is quite bizarre because the errors are for not finding the database connection, but elsewhere in Drupal, outside the DatabaseLockBackend, it certainly has no trouble accessing the database. I can even get it to run the updates simply by putting an if ($this->database) { check in there; the pre-existing code to go back for another try works fine it seems, but the exception i am getting is not one that was expected.

The same sort of error (query on NULL database) happens in this block, but running the database updates a second time works; clearly it is able to get the database sometimes.

    try {
      $lock = $this->database->query('SELECT [expire], [value] FROM {semaphore} WHERE [name] = :name', [':name' => $name])->fetchAssoc();
    }
    catch (\Exception $e) {
      $this->catchException($e);
      // If the table does not exist yet then the lock may be available.
      $lock = FALSE;
    }

Got a stack trace?

   [error]  Error: Call to a member function insert() on null in Drupal\Core\Lock\DatabaseLockBackend->acquire() (line 71 of /var/www/html/web/core/lib/Drupal/Core/Lock/DatabaseLockBacken  
  d.php) #0 /var/www/html/web/core/lib/Drupal/Core/Cache/CacheCollector.php(235): Drupal\Core\Lock\DatabaseLockBackend->acquire()                                                            
  #1 /var/www/html/web/core/lib/Drupal/Core/Cache/CacheCollector.php(312): Drupal\Core\Cache\CacheCollector->updateCache()                                                                   
  #2 /var/www/html/web/core/lib/Drupal/Core/DrupalKernel.php(691): Drupal\Core\Cache\CacheCollector->destruct()                                                                              
  #3 /var/www/html/vendor/drush/drush/src/Boot/DrupalBoot8.php(312): Drupal\Core\DrupalKernel->terminate()                                                                                   
  #4 [internal function]: Drush\Boot\DrupalBoot8->terminate()                                                                                                                                
  #5 {main}. 

Let's assume it's a bug for now.

Are you able to create a clean install of Drupal 10.4 and update to Drupal 11 on otherwise the same environment?

So it is not a Drupal Core issue (as i guess i should have expected)— it occurs due to the Drupal 11.1-compatible issue fork of Field Encrypt 📌 Support OOP hooks Active , specifically the src/FieldEncryptServiceProvider.php file, which is… not mentioned in the field_encrypt.services.yml Huh, did not realize there would be anywhere Drupal automatically interprets something not in Plugins or something like that. Anyhow if there is anything that jumps out to core maintainers for Field Encrypt to fix… 📌 Support OOP hooks Active