Course 2 Week 2 Assignment Viterbi Backward - 3 Tests passed 1 Test failed

Hey @avazeh,
Only the staff members have access to your labs, so please don’t share your Lab ID, unless someone explicitly asks you as an individual to do so. Please keep this in mind for future references.

That being said, have you tried out the above fixes that I suggested to Nikhil and Amal. If not, then I would suggest you to try them first, since these fixes are most likely to solve your issue. If your issue still remains, feel free to DM me your implementation of the function, and I would be more than happy to help you out.

Cheers,
Elemento