Minecraft / MinecraftForge classes not being found even though I'm importing their packages, etc:

[CamouflageCamel]

Minecraft 1.12.2

Very frustrating error. only ever occurs on one device. Started yesterday without prompting (maybe java updated or something?) Says things that have been imported actually arent when running client Reinstalled Intellij, cleared cache, cleaned and rebuilt gradle, redownloaded the entire file from git. Nothing works. (I believe I have the right plugins installed, dependencies OK, and am using corretto 1.8).

 

One thing I did for more of the below errors was just to explicitly import them, which was working up until this little guy who literally does not exist in forge to import. the class inhereting something inhereting it refers to import net.minecraftforge.registries.IForgeRegistryEntry.Impl, not net.minecraftforge.registries.IForgeRegistryEntry$Impl as the output implies. also I didn't even have to manually import these things for it to work on my other device. (which is just importing the minecraft package that contains them), but here I did have to just to get rid of a few errors--not even make anything work?? I dont know. (edited)

here's the aforementioned "below error" (one of many like it):

error: cannot access net.minecraftforge.registries.IForgeRegistryEntry.Impl
public class BlockBase extends Block {
       ^
  class file for net.minecraftforge.registries.IForgeRegistryEntry$Impl not found

Here's the class BlockBase:
 

package com.quantum.exodus.common.blocks;

import com.quantum.exodus.ExodusMod;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraftforge.registries.IForgeRegistryEntry.Impl;

public class BlockBase extends Block {

    protected String name;

    public BlockBase(Material material, String name) {
        super(material);
        this.name = name;
        setTranslationKey(name);
        setRegistryName(name);

    }

    public void registerItemModel(Item itemBlock) {
        ExodusMod.proxy.registerItemRenderer(itemBlock, 0, name);
    }

    public Item createItemBlock() {
        return new ItemBlock(this).setRegistryName(getRegistryName());
    }

    @Override
    public BlockBase setCreativeTab(CreativeTabs tab) {
        super.setCreativeTab(tab);
        return this;
    }
}

Edited December 3, 2023 by CamouflageCamel

[CamouflageCamel]

Fixed it. Delete .idea folder and then go to build>rebuild

solves it.