Did you performed a clean install or dirty flash? I always do dirty flash over the current base. So upgrading from ERB6 to ERB9 was no problem. Hope it will work with the upcoming one so that I don't need to wipe everything.
I guess this error ...
You must unlock bootloader first then flash any custom or global rom .
Can you give link for magisk 16.1?
can u upload secsetings < an apk and odex file >?
Dont re-use updater-script. It will cause fc.
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Please put a correct update script