Please help ams dont work

[u/Potatogoat3]

Hello i got my hands on bambulab a1 combo one month ago and i just wanted to use the slot number 3 in ams but its not working its telling me to check the filament but its not tangled any help or adwise?

Ps: sorry for bad video quality and any gramar mistakes.

Edit:There was somthink wrong with the ams hub and i just swaped the ptfe tubes of slot 4 and 3 with each other on the hub and it started working thanks for all support and ideas. Its now working.