I had that problem like that and I solved it by tightening 4 screws behind the Hotend.
See the first 2 photos in the link below.
https://forum.bambulab.com/t/a1-mini-a1-users-solved-screw-fell-out-of-toolhead/97626
I had that problem like that and I solved it by tightening 4 screws behind the Hotend.
See the first 2 photos in the link below.
https://forum.bambulab.com/t/a1-mini-a1-users-solved-screw-fell-out-of-toolhead/97626