Sorry... I didn't understand the reference. I use AME version 22.0. I asked a colleague to try and the export is working with his device. I think I have different parameters or graphic board, which can explain that it doesn't work on my device. But there has been 2 years I am using this PC and Adobe CC, and I had no problem until now.
Another workaround is to try disabling some (or all) of the hardware decoding/encoding settings in AME's Media preferences:
If that works then it might be related to your GPU card(s). Also check if there are updated drivers available online.