Porting mod from 1.20.2 to 1.21.1 | The Fabric Project | Page 1

So I am porting a mod from 1.20.2 to 1.21.1 and there are only 2 errors I got and I'm not sure how to fix them. It's specifically the Identifiers at the start of the code. https://pastebin.com/71FvjMT9

Pastebin

package com.moxg.moonphaseinfou;import com.mojang.blaze3d.systems.R...

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#Porting mod from 1.20.2 to 1.21.1