The "simple_membership_typeadd" entity type does not exist

nilesh.addweb → made their first commit to this issue’s fork.

Please Review.

I can now access /admin/structure/simple_membership_type/add

but get this error on save.

The website encountered an unexpected error. Try again later.

TypeError: Drupal\simple_membership\Entity\SimpleMembershipType::setSimpleWorkflow(): Argument #1 ($workflow) must be of type array, null given, called in \modules\contrib\simple_membership\src\Form\SimpleMembershipTypeForm.php on line 59 in Drupal\simple_membership\Entity\SimpleMembershipType->setSimpleWorkflow() (line 84 of modules\contrib\simple_membership\src\Entity\SimpleMembershipType.php).