>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3354494. --> Reported by: [freelock](https://www.drupal.org/user/313537) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>The module does not declare a dependency on ECA, and ECA action plugins share the same namespace as core actions -- this causes problems on sites without ECA.</p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Enable Matrix API module on a site without ECA. Go to the Extend tab. You get a whitescreen.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Either make the plugin extend a core action class, or move it to a submodule with a dependency on ECA.</p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <p>Investigate issue, determine correct solution.</p> <h3 id="summary-ui-changes">User interface changes</h3> <p>None.</p> <h3 id="summary-api-changes">API changes</h3> <p>Possible need to enable a submodule.</p>