TypeError: Drupal\eca_modeller_bpmn\ModellerBpmnBase::buildConfigurationForm()
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3465248. -->
Reported by: [fox_01](https://www.drupal.org/user/899886)
Related to !442
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>After Upgrading from Drupal 10.2.5 to 10.3.1 and ECA 1.x to 2.x i get the following error when creating or editing an existing BPMN ECA flow. Other modellers work.</p>
<p>Modules used</p>
<ul>
<li>Machine name: bpmn_io - Version: 2.0.0</li>
<li>Machine name: eca -Version: 2.0.1</li>
</ul>
<pre>TypeError: Drupal\eca_modeller_bpmn\ModellerBpmnBase::buildConfigurationForm(): Return value must be of type array, null returned in Drupal\eca_modeller_bpmn\ModellerBpmnBase->buildConfigurationForm() (line 584 of modules/contrib/eca/modules/modeller_bpmn/src/ModellerBpmnBase.php).<br>Drupal\eca_modeller_bpmn\ModellerBpmnBase->getTemplates() (Line: 85)<br>Drupal\bpmn_io\Plugin\ECA\Modeller\BpmnIo->edit() (Line: 208)<br>Drupal\eca_ui\Controller\EcaController->edit('process_xon9our')<br>call_user_func_array(Array, Array) (Line: 123)<br>Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 638)<br>Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 121)<br>Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)<br>Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)<br>Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)<br>Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53)<br>Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)<br>Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)<br>Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)<br>Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 57)<br>Drupal\advban\AdvbanMiddleware->handle(Object, 1, 1) (Line: 50)<br>Drupal\ban\BanMiddleware->handle(Object, 1, 1) (Line: 48)<br>Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)<br>Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)<br>Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 49)<br>Drupal\remove_http_headers\StackMiddleware\RemoveHttpHeadersMiddleware->handle(Object, 1, 1) (Line: 51)<br>Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741)<br>Drupal\Core\DrupalKernel->handle(Object) (Line: 19)</pre><h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
issue