Error when recalculating policies if the node has no inheritance information

[System25]

When a computer has no inheritance information that the user clicks the recalculate policies button the following error appears:

[2020-08-31 07:42:09,129: ERROR/MainProcess] [5f48f975c19e1638e29e606d] tasks.py ::: report_generic_error - message = No save in chef server. 'inheritance'
[2020-08-31 07:42:09,130: ERROR/MainProcess] [5f48f975c19e1638e29e606d] Traceback (most recent call last):
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/tasks.py", line 2281, in object_refresh_policies
    return func(user, obj, computers=computers)
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/tasks.py", line 2008, in computer_refresh_policies
    self.object_refresh_policies(user, ou, computers=computers)
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/tasks.py", line 1703, in object_refresh_policies
    self.object_action(user, objnew, action='recalculate policies', computers=computers)
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/tasks.py", line 1599, in object_action
    recalculate_policies_for_computers(self.logger, self.db, obj, computers)
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/utils.py", line 1630, in recalculate_policies_for_computers
    recalculate_inherited_field(logger, db, str(obj['_id']))
  File "/opt/gecosccui-2.6.0/lib/python2.7/site-packages/gecoscc/utils.py", line 2285, in recalculate_inherited_field
    for policy in get_inheritance_tree_policies_list(obj['inheritance'], []):
KeyError: 'inheritance'