TypeError

Experiencing the same issues on 11.1.0

As according to the error the issue stems from Drupal/Component/DependencyInjection/Container.php where definitions and arguments of the object with id "term_merge.term_merger" are resolved (as I understand it).

On line 237 in container.php the code $arguments = $this->resolveServicesAndParameters($arguments); resolves the service "event_dispatcher" to a Symfony\Component\EventDispatcher\EventDispatcher.

Though in term_merge\src\TermMerger.php it is specified to use the Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher. However, ContainerAwareEventDispatcher was deprecated as of drupal 10.3.0 ( https://www.drupal.org/node/3376090 → ) in favor of Symfony\Component\EventDispatcher\EventDispatcher. This leads me to suspect that Drupal is resolving EvenDispatcher to the preferred one from Symfony but the module is still specifying to use the Drupal ContainerAwareEventDispatcher.

Changing Drupal\Component\EventDispatcher\ContainerAwareEventDispatche to Symfony\Component\EventDispatcher\EventDispatche as well as ContainerAwareEventDispatcher to EventDispatcher in TermMerger.php resolves the issue.

niharika.s → made their first commit to this issue’s fork.

Yes same here 11.1.1
here is a patch as the fix is very simple

The patch doesn't works for me.

Drupal\term_merge\TermMerger::__construct(): Argument #3 ($dispatcher) must be of type Symfony\Component\EventDispatcher\EventDispatcher, Drupal\tracer\EventDispatcher\TraceableEventDispatcher given, called in /www/site/web/core/lib/Drupal/Component/DependencyInjection/Container.php on line 259

in /www/site/web/modules/contrib/term_merge/src/TermMerger.php (line 56)

Hi, the patch is working for term_merge 2.0.0-beta6 on drupal 11.1. Thanks for the patch.