andthen_focus_error_message.lean:3:14: error: focus tactic failed, insufficient number of goals
state:
a b c : ℕ
⊢ b = b
andthen_focus_error_message.lean:9:13: error: focus tactic failed, insufficient number of goals
state:
a b c : ℕ
⊢ b = b
andthen_focus_error_message.lean:16:14: error: focus tactic failed, insufficient number of tactics
state:
a : ℕ
⊢ a = a
andthen_focus_error_message.lean:22:14: error: focus tactic failed, insufficient number of tactics
state:
a : ℕ
⊢ a = a
