I renamed the magisk apk to uninstall.apk -> flashed this file in TWRP -> reboot -> renamed to magisk.zip -> flashed it in TWRP -> renamed the file to magisk.apk -> installed it -> it works again. But I used v23.0 canary (21) and DID NOT update to the new Version
All modules are lost, but if you reinstall them, all will work fine again.
All files are the same, but they have already the right names.
drive.google.com