[BUG] SVT-AV1 encoding end immediately

[manzing]

Hi,

I just tried SVT-AV1 encoding using latest public release 2022.03.20.1 for a test drive.

But it crash with this error :  

Error: The type of file 'C:\Users\user\AppData\Local\Temp\2022-08-22@11_13_36_7810_04.av1' could not be recognized.

Reading the post, I wonder if svt-av1 is well supported in public version. 
Is the feature still under development?

Thanks.