Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
The next action according to the plan is to board p5 onto fast0 at floor 3. This aligns with the plan and moves us closer to completing the goal state.

New State Description:
- **fast0**: Fast elevator at floor 3 (n3), with 1 passenger (p5) and a capacity of 2.- **fast1**: Fast elevator at floor 0 (n0), with 0 passengers and a capacity of 2.- **slow0-0**: Slow elevator at floor 1 (n1), with 0 passengers and a capacity of 1.- **slow1-0**: Slow elevator at floor 3 (n3), with 0 passengers and a capacity of 1.- **p0**: On floor 1 (n1).- **p1**: On floor 3 (n3).- **p2**: On floor 2 (n2).- **p3**: On floor 0 (n0).- **p4**: On floor 3 (n3).- **p5**: Onboard fast0 at floor 3 (n3).

Action Chosen:
(board p5 fast0 n3 n0 n1)
