Warning: array_filter() expects parameter 1 to be array, string given [#2882748]

Problem/Motivation

I'm getting two webform related errors I can't find more information about on Google.

The error occurs when I:

- select a single image select image
- select multiple image select images

(allowed number of values single or unlimited)

And click on the next page button.

Screenshot of webform view screen: http://pix.toile-libre.org/upload/original/1496239032.png
Screenshot of webform image select settings: http://pix.toile-libre.org/upload/original/1496239100.png

Warning: array_filter() expects parameter 1 to be array, string given in Drupal\webform\Plugin\WebformElement\OptionsBase::validateMultipleOptions() (line 295 of modules/contrib/webform/src/Plugin/WebformElement/OptionsBase.php).

Drupal\webform\Plugin\WebformElement\OptionsBase::validateMultipleOptions(Array, Object, Array)
call_user_func_array(Array, Array) (Line: 1309)
Drupal\webform\WebformSubmissionForm::hiddenElementValidate(Array, Object, Array)
call_user_func_array(Array, Array) (Line: 277)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object, 'webform_submission_creditcard_helper_form') (Line: 119)
Drupal\Core\Form\FormValidator->validateForm('webform_submission_creditcard_helper_form', Array, Object) (Line: 571)
Drupal\Core\Form\FormBuilder->processForm('webform_submission_creditcard_helper_form', Array, Object) (Line: 314)
Drupal\Core\Form\FormBuilder->buildForm('webform_submission_creditcard_helper_form', Object) (Line: 48)
Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'default') (Line: 823)
Drupal\webform\Entity\Webform->getSubmissionForm() (Line: 82)
Drupal\webform\Controller\WebformController->addForm(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 574)
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}()
call_user_func_array(Object, Array) (Line: 144)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 64)
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: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 656)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Warning: array_values() expects parameter 1 to be array, null given in Drupal\webform\Plugin\WebformElement\OptionsBase::validateMultipleOptions() (line 296 of modules/contrib/webform/src/Plugin/WebformElement/OptionsBase.php).

Drupal\webform\Plugin\WebformElement\OptionsBase::validateMultipleOptions(Array, Object, Array)
call_user_func_array(Array, Array) (Line: 1309)
Drupal\webform\WebformSubmissionForm::hiddenElementValidate(Array, Object, Array)
call_user_func_array(Array, Array) (Line: 277)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object) (Line: 235)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object, 'webform_submission_creditcard_helper_form') (Line: 119)
Drupal\Core\Form\FormValidator->validateForm('webform_submission_creditcard_helper_form', Array, Object) (Line: 571)
Drupal\Core\Form\FormBuilder->processForm('webform_submission_creditcard_helper_form', Array, Object) (Line: 314)
Drupal\Core\Form\FormBuilder->buildForm('webform_submission_creditcard_helper_form', Object) (Line: 48)
Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'default') (Line: 823)
Drupal\webform\Entity\Webform->getSubmissionForm() (Line: 82)
Drupal\webform\Controller\WebformController->addForm(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 574)
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}()
call_user_func_array(Object, Array) (Line: 144)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 64)
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: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 656)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Comment	File	Size	Author
#5	webform-error-full.yml	3.72 KB	Hyperfocused
#4	webform-error.yml	1.31 KB	Hyperfocused
#3	webform.webform.issue_2882748.yml	5.55 KB	jrockowitz

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Comments

Comment #1

31 May 2017 at 13:58

Hyperfocused created an issue. See original summary.

Comment #2

Hyperfocused CreditAttribution: Hyperfocused commented 31 May 2017 at 15:28

Issue summary:

View changes

Comment #3

jrockowitz CreditAttribution: jrockowitz as a volunteer and at The Big Blue House commented 31 May 2017 at 16:11

Status:

Active

» Postponed (maintainer needs more info)

File	Size
webform.webform.issue_2882748.yml	5.55 KB

I can't duplicate the issue using the attached example form.

Comment #4

Hyperfocused CreditAttribution: Hyperfocused commented 31 May 2017 at 17:05

File	Size
webform-error.yml	1.31 KB

Thanks for your quick help!

I just tried it again on a fresh site, latest Drupal, could duplicate it with attached code.

Proof: http://pix.toile-libre.org/upload/original/1496250301.png

Comment #5

Hyperfocused CreditAttribution: Hyperfocused commented 31 May 2017 at 17:08

File	Size
webform-error-full.yml	3.72 KB

Full configuration export attached.

Comment #6

Hyperfocused CreditAttribution: Hyperfocused commented 31 May 2017 at 17:43

I could replicate the error with your example, maybe it's because of my Drupal installation? Almost nothing going on in this installation, maybe I need to try on a completely fresh Drupal installation?

Comment #7

Hyperfocused CreditAttribution: Hyperfocused commented 31 May 2017 at 18:16

Should I send you the full Drupal installation (files + db) for inspection? Where should I send it to? It's bundled with a docker-compose.yml file, you'll just need to run docker-compose up to see my environment.