want to run that on a forge server,but as the pic says.
tried update,but nothing help

and nothing wrong with file md5

The error also occurs on the client; you can see in the log.
EDIT: This is fixed in RandomTweaks 1.12.2-2.2.0.2.

I've tried to fix this issue before, but I'll look into it again. It's nothing urgent as long as it doesn't crash.

you're right,
but is there an easy way to skip forge signature verify?

seems the verify fail only occurred on forge server,not on forge client?