Can't build in intellj 2023

[Minerceus]

Hi, I can't build project somehow. How can I fix that error?

ForgeHax-1.16.5-3.3.1\buildSrc\JavacPlugin\src\main\java\dev\fiki\javac\plugin\EventProcessor.java:3: error: package com.sun.tools.javac.code is not visible
import com.sun.tools.javac.code.*;

[fr1kin]

You need to build it with java 8