Query condition 'node.uuid IN ()' cannot be empty

+ when I go back in browser and refresh I can see following to warnings :

Warning: Undefined array key 1 in Drupal\Core\Config\ConfigManager->findMissingContentDependencies() (line 499 of core\lib\Drupal\Core\Config\ConfigManager.php).
Drupal\Core\Config\ConfigManager->findMissingContentDependencies() (Line: 693)
Drupal\Core\Config\ConfigImporter->processMissingContent(Array) (Line: 561)
Drupal\Core\Config\ConfigImporter->doSyncStep('processMissingContent', Array) (Line: 537)
Drupal\Core\Config\ConfigImporter->import() (Line: 365)
Drupal\eca_ui\Form\Import->submitForm(Array, Object)
call_user_func_array(Array, Array) (Line: 129)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 67)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 597)
Drupal\Core\Form\FormBuilder->processForm('eca_import', Array, Object) (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

and

Warning: Undefined array key 2 in Drupal\Core\Config\ConfigManager->findMissingContentDependencies() (line 499 of core\lib\Drupal\Core\Config\ConfigManager.php).
Drupal\Core\Config\ConfigManager->findMissingContentDependencies() (Line: 693)
Drupal\Core\Config\ConfigImporter->processMissingContent(Array) (Line: 561)
Drupal\Core\Config\ConfigImporter->doSyncStep('processMissingContent', Array) (Line: 537)
Drupal\Core\Config\ConfigImporter->import() (Line: 365)
Drupal\eca_ui\Form\Import->submitForm(Array, Object)
call_user_func_array(Array, Array) (Line: 129)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 67)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 597)
Drupal\Core\Form\FormBuilder->processForm('eca_import', Array, Object) (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

I haven't seen that before and can't reproduce.

Can you reproduce that on a fresh installation of Drupal? If so, can you please provide the exact steps (including versions of installed components) on how we could reproduce that?

I just tried with clean and I found out it is caused by this module easy_entity_field →

1.Install easy_entity_field
2.Configure > Enable Content
3.Add any base field (no need to create any content(
4. Try import of any ECA module.

I do have 2 base fields so probably this is the reason why I can see 2 warnings.
When I deleted them - it works as expected. However I cannot remove them on my prod because they are being used.

Can I do import from my test to prod even there are such errors ? ( I believe model should not be impacted).

However it seems this easy_entity_field module is not compatible with ECA or not sure why there is problem with ECA... But easy_entity_field is awesome module...

Thanks for the details. With that, I was able to find out, this is an error in the easy_entity_field. Here is what happens:

In \Drupal\Core\Config\ConfigManager::findMissingContentDependencies, Drupal core tries to find content dependencies when importing config. The base field config entity from the easy_entity_field comes with a content dependency on node. And that leads to the error then because content dependencies need to be in the format entity_type:bundle:uuid as documented in that method.