any advice?
Yes.
1. Mention what robot manufacturer it is, then your thread can be placed in the correct board.
2. Provide as many details as you can instead of just "Axis 5 Stopped".
3. Provide any details that can be relevant between when it was working last and it's current condition.
4. Tell us what you have done currently to try and resolve this.
5. Provide any other information you think is relevant so we don't have to play detectives.