Update not found 11.3b3

Hey,

I use my Opencore setup for a year now but when I try to install the latest beta I get this error:

Update not found

The requested version of macOS is not available.

I already tried to opt out of beta and opt in again :(

config.plist file: https://ufile.io/ssrp3hqq

submitted by /u/Goldgamer-
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