>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3577088. --> Reported by: [mandclu](https://www.drupal.org/user/52136) Related to !594 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>I'm currently working on incorporating ECA into a Drupal site template, using more than a dozen ECA models. Three of them trigger fatal errors during the installation however. The errors thrown look like this:</p> <p><code>ResponseText: Drupal\Component\Plugin\Exception\PluginNotFoundException: The "eca_workflow_transition:session_acceptance" plugin does not exist. Valid plugin IDs for Drupal\Core\Action\ActionManager are: easy_email_send,...</code></p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Use the development version of event_platform_starter which is currently at <a href="https://git.drupalcode.org/project/event_platform_starter/-/merge_requests/5">https://git.drupalcode.org/project/event_platform_starter/-/merge_requests/5</a> and requires <a href="https://git.drupalcode.org/sandbox/mandclu-3576733/-/commit/b125ca567af5252388de98c12e0dfc91299fa329">https://git.drupalcode.org/sandbox/mandclu-3576733/-/commit/b125ca567af5252388de98c12e0dfc91299fa329</a>. I intend to promote this to a full project soon and cut a release soon but for now the project includes a later commit which includes the fix suggested in the MR here, so to reproduce the error it's helpful to use a version without the fix. This helper module can be pulled into a fresh install of Drupal CMS as a custom module for now. Run the installer and select the Event Platform site template. Observe that it throws three fatal errors.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Add a workflow_insert hook to the existing eca_workflow submodule.</p>