(I was unable to select the current release version of Acquia Search, 3.1.11, in the issue metadata fields. (The only available values are dev versions.)
After updating to the latest version Search API Solr (4.3.3 -> 4.3.4), I get this error:
PHP Fatal error: Declaration of Drupal\acquia_search\Plugin\SolrConnector\SearchApiSolrAcquiaConnector::setEventDispatcher(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher $eventDispatcher): Drupal\search_api_solr\SolrConnectorInterface must be compatible with Drupal\search_api_solr\SolrConnector\SolrConnectorPluginBase::setEventDispatcher(Symfony\Component\EventDispatcher\EventDispatcherInterface $eventDispatcher): Drupal\search_api_solr\SolrConnectorInterface in /app/docroot/modules/contrib/acquia_search/src/Plugin/SolrConnector/SearchApiSolrAcquiaConnector.php on line 136
Note: this occurs with the current version of Search API (1.34) as well as the previous (1.33).
Update Search API Solr to its latest release version using Composer.
A similar issue has been reported and marked fixed in the Search API Solr queue [ https://www.drupal.org/project/search_api_solr/issues/3449292] → — perhaps a similar approach could resolve the issue with Acquia Search.
Closed: duplicate
3.1
Code
Will be handled in https://www.drupal.org/project/acquia_search/issues/3450845 📌 Automated Drupal 11 compatibility fixes for acquia_search Needs review