Remix Tool Export Error

Hi There!

We have the problem that when we use the RemixTool we get an error when exporting the video (see screenshot).

How can we fix this error?

The same problem was also described here:
https://community.adobe.com/t5/premiere-pro-beta-discussions/unable-to-export-timeline-with-remixed-audio/m-p/12525694

and here:
https://community.adobe.com/t5/premiere-pro-beta-discussions/project-won-t-export-with-remix-used-in-sequence/m-p/12505119

thnx for helping & best regards from Germany

Nick