error when clicking variations tab

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Error: Call to a member function getVariations() on null in commerce_bulk_form_views_form_commerce_bulk_variations_tab_commerce_bulk_alter() (line 71 of modules/contrib/commerce_bulk/commerce_bulk.module).
commerce_bulk_form_views_form_commerce_bulk_variations_tab_commerce_bulk_alter(Array, Object, 'views_form_commerce_bulk_variations_tab_commerce_bulk_241') (Line: 539)
Drupal\Core\Extension\ModuleHandler->alter('form', Array, Object, 'views_form_commerce_bulk_variations_tab_commerce_bulk_241') (Line: 834)
Drupal\Core\Form\FormBuilder->prepareForm('views_form_commerce_bulk_variations_tab_commerce_bulk_241', Array, Object) (Line: 276)
Drupal\Core\Form\FormBuilder->buildForm('views_form_commerce_bulk_variations_tab_commerce_bulk_241', Object) (Line: 216)
Drupal\Core\Form\FormBuilder->getForm(Object, Object, Array) (Line: 2206)
Drupal\views\Plugin\views\display\DisplayPluginBase->elementPreRender(Array)
call_user_func(Array, Array) (Line: 378)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 450)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 582)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 156)
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: 50)
Drupal\ban\BanMiddleware->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)