TypeError: Argument 1 passed to file_validate() must implement interface Drupal\file\FileInterface, instance of Drupal\media_entity\Entity\Media given

Hi there,

Sorry if this is in the wrong place.

Upon installation of Media + Entity browser I get the following when trying to upload a file in the modal view. Have tried using Entity Browser 1.0 and the dev branch, on different machines. All have the exact same issue.

Steps:

1. drush en media
2. Create an empty content type 'Test'
3. Add an Image reference field
4. Set form display type to Entity Browser with the Gallery Media library option selected
5. Create a new Test content item and hit the Select Media button on the image reference field
6. In the modal, click the upload images tab and select an image to upload
7. Press select entities and immediately get the below error in the modal

The website encountered an unexpected error. Please try again later.
TypeError: Argument 1 passed to file_validate() must implement interface Drupal\file\FileInterface, instance of Drupal\media_entity\Entity\Media given, called in /path/to/drupal/modules/contrib/entity_browser/src/Plugin/EntityBrowser/WidgetValidation/File.php on line 31 in file_validate() (line 286 of core/modules/file/file.module).
file_validate(Object, Array) (Line: 31)
Drupal\entity_browser\Plugin\EntityBrowser\WidgetValidation\File->validate(Array, Array) (Line: 319)
Drupal\entity_browser\WidgetBase->runWidgetValidators(Array, Array) (Line: 294)
Drupal\entity_browser\WidgetBase->validate(Array, Object) (Line: 251)
Drupal\dropzonejs_eb_widget\Plugin\EntityBrowser\Widget\DropzoneJsEbWidget->validate(Array, Object) (Line: 171)
Drupal\entity_browser\Form\EntityBrowserForm->validateForm(Array, Object)
call_user_func_array(Array, Array) (Line: 83)
Drupal\Core\Form\FormValidator->executeValidateHandlers(Array, Object) (Line: 270)
Drupal\Core\Form\FormValidator->doValidateForm(Array, Object, 'entity_browser_gallery_media_library_form') (Line: 119)
Drupal\Core\Form\FormValidator->validateForm('entity_browser_gallery_media_library_form', Array, Object) (Line: 571)
Drupal\Core\Form\FormBuilder->processForm('entity_browser_gallery_media_library_form', Array, Object) (Line: 314)
Drupal\Core\Form\FormBuilder->buildForm('entity_browser_gallery_media_library_form', Object) (Line: 74)
Drupal\Core\Controller\FormController->getContentResult(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)