An AJAX HTTP error occurred. HTTP Result Code: 500

Problem/Motivation

When I select the Target Entity type as Content Then nothing is updated in the Target bundle and getting this error

An AJAX HTTP error occurred.
HTTP Result Code: 500
Debugging information follows.
Path: /admin/config/workflow/business_rules/add?ajax_form=1
StatusText: Internal Server Error
ResponseText: The website encountered an unexpected error. Please try again later.Symfony\Component\HttpKernel\Exception\HttpException: The specified #ajax callback is empty or not callable. in Drupal\Core\Form\FormAjaxResponseBuilder->buildResponse() (line 67 of core/lib/Drupal/Core/Form/FormAjaxResponseBuilder.php). Drupal\Core\Form\EventSubscriber\FormAjaxSubscriber->onException(Object, 'kernel.exception', Object)
call_user_func(Array, Object, 'kernel.exception', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.exception') (Line: 229)
Symfony\Component\HttpKernel\HttpKernel->handleThrowable(Object, Object, 1) (Line: 92)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 713)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Steps to reproduce

Just enable the Business_rule module and add a new rule

Proposed resolution

It should not render the ajax error and. and the dependent field(Target Bundle) should be successfully updated.