Fix bug in application member deletion

atst/domain/applications.py

@@ -128,15 +128,11 @@ class Applications(BaseDomainClass):
         return invitation
 
     @classmethod
-    def remove_member(cls, application, user_id):
-        application_role = ApplicationRoles.get(
-            user_id=user_id, application_id=application.id
-        )
-
+    def remove_member(cls, application_role):
         application_role.status = ApplicationRoleStatus.DISABLED
         application_role.deleted = True
 
-        for env in application.environments:
+        for env in application_role.application.environments:
             EnvironmentRoles.delete(
                 application_role_id=application_role.id, environment_id=env.id
             )

atst/routes/applications/team.py

@@ -189,14 +189,15 @@ def create_member(application_id):
 def remove_member(application_id, application_role_id):
     application_role = ApplicationRoles.get_by_id(application_role_id)
 
-    Applications.remove_member(
-        application=g.application, user_id=application_role.user_id
-    )
-    user = Users.get(application_role.user_id)
+    user_name = "a user"
+    if application_role.user:
+        user_name = application_role.user.full_name
+
+    Applications.remove_member(application_role)
 
     flash(
         "application_member_removed",
-        user_name=user.full_name,
+        user_name=user_name,
         application_name=g.application.name,
     )