MIXAMO TO UE : mesh contains default bone as root but animation doesn't contain the root track

Hello, everybody.
For 2 days, it’s impossible for me to rigger a character on mixamo and put the animation on UE.

Here is the UE error message:
“Unreal engine mesh contains default bone as root but animation doersn’t contain the root track”.

My version of EU is the 4.21.2. Two days ago everything was working well and suddenly, impossible to import an animation on a character.

I looked everywhere… I even installed the 4.19.2 version of UE to test it, and same problem…
I tried lots of different characters and lots of different animations… same problem

I may have touched something that was not necessary… I don’t know what to do anymore and I’m stuck.

If someone has a solution to offer me or if someone has already had a problem…

Thank you