Getting this error when submitting form using:
Fetcher: upload file
Parser: JsonPath
Processor: User
The website encountered an unexpected error. Please try again later.
TypeError: Argument 1 passed to Drupal\feeds_ex\Feeds\Parser\ParserBase::submitConfigurationForm() must be of the type array, null given, called in /var/www/html/web/modules/contrib/feeds/src/FeedTypeForm.php on line 327 in Drupal\feeds_ex\Feeds\Parser\ParserBase->submitConfigurationForm() (line 441 of modules/contrib/feeds_ex/src/Feeds/Parser/ParserBase.php).
Drupal\feeds_ex\Feeds\Parser\ParserBase->submitConfigurationForm(NULL, Object) (Line: 327)
Drupal\feeds\FeedTypeForm->submitForm(Array, Object)
call_user_func_array(Array, Array) (Line: 111)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 51)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 589)
Drupal\Core\Form\FormBuilder->processForm('feeds_feed_type_form', Array, Object) (Line: 318)
Drupal\Core\Form\FormBuilder->buildForm('feeds_feed_type_form', Object) (Line: 93)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 582)
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: 151)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
Postponed: needs info
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I am having this problem now with D10. If I change fetcher and parser at the same time I get the error. If I have have feeds_ex then it shows, otherwise just feeds. I have a mega grip of modules installed...
Also just ran into this. Changed the parser to RSS and saved and then back to CSV, and the error was gone.