Mismatched entity interface for webform

When trying to visit the configuration page for an individual webform (see screenshot), fatal error is received.
This is alliteratively triggered by directly visiting the URL

/webform/[WEBFORM NAME]/salesforce

Error is:

TypeError: Argument 1 passed to Drupal\salesforce_mapping\MappedObjectStorage::loadByEntity() must implement interface Drupal\Core\Entity\ContentEntityInterface, instance of Drupal\webform\Entity\Webform given, called in /mnt/www/html/infobuildersdev/docroot/modules/contrib/salesforce/modules/salesforce_mapping/src/Controller/MappedObjectController.php on line 53 in Drupal\salesforce_mapping\MappedObjectStorage->loadByEntity() (line 83 of modules/contrib/salesforce/modules/salesforce_mapping/src/MappedObjectStorage.php).
Drupal\salesforce_mapping\MappedObjectStorage->loadByEntity(Object) (Line: 53)
Drupal\salesforce_mapping\Controller\MappedObjectController->getMappedObjects(Object) (Line: 67)
Drupal\salesforce_mapping\Controller\MappedObjectController->listing(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: 18)

We are currently at the latest development released on October 11, 2017.
However this has persisted back as far we can tell to 8.2x