incompetence
//ɪnˈkɒmpɪtəns//
Noun
1
The inability to do something successfully or as it should be done; lack of skill or ability.
The project failed due to the manager's incompetence.
2
The state of being legally unqualified or unfit to perform a required duty or professional function.
The court declared his incompetence to stand trial due to his mental condition.