How to compile the mod? I tried to do so with gradlew build and with IntelliJ, but errors keep popping up. This is for 1.15.2 by the way. The complete log is below, but this part stood out to me:

Error:(15, 30) java: cannot find symbol
  symbol:   class SpecialManualElement
  location: class blusunrize.lib.manual.TextSplitterTest

I am a sufferer of the already documented Engineers Table Rendering crash, and saw on the issues that it had been fixed, and wanted to get the fix as it has not been released as an update on CurseForge yet.

(Apologies, IDK how to do spoilers).

Log:

Information:java: Errors occurred while compiling module 'ImmersiveEngineering.test'
Information:javac 1.8.0_212 was used to compile java sources
Information:Modules "ImmersiveEngineering.main", "ImmersiveEngineering.test" were fully rebuilt due to project configuration/dependencies changes
Information:6/12/2020 11:55 PM - Build completed with 100 errors and 0 warnings in 7 s 442 ms
B:\ProgrammingProj\ImmersiveEngineering\src\test\java\blusunrize\lib\manual\TextSplitterTest.java
Error:(3, 33) java: package blusunrize.lib.manual.gui does not exist
Error:(4, 46) java: package net.minecraft.client.gui.widget.button does not exist
Error:(15, 30) java: cannot find symbol
symbol: class SpecialManualElement
location: class blusunrize.lib.manual.TextSplitterTest
Error:(16, 30) java: cannot find symbol
symbol: class SpecialManualElement
location: class blusunrize.lib.manual.TextSplitterTest
Error:(17, 17) java: cannot find symbol
symbol: class TextSplitter
location: class blusunrize.lib.manual.TextSplitterTest
Error:(39, 48) java: cannot find symbol
symbol: class SpecialManualElement
location: class blusunrize.lib.manual.TextSplitterTest
Error:(112, 51) java: cannot find symbol
symbol: class SpecialManualElement
location: class blusunrize.lib.manual.TextSplitterTest
Error:(128, 38) java: cannot find symbol
symbol: class ManualScreen
location: class blusunrize.lib.manual.TextSplitterTest.DummyElement
Error:(128, 75) java: cannot find symbol
symbol: class Button
location: class blusunrize.lib.manual.TextSplitterTest.DummyElement
Error:(133, 36) java: cannot find symbol
symbol: class ManualScreen
location: class blusunrize.lib.manual.TextSplitterTest.DummyElement
Error:(22, 32) java: cannot find symbol
symbol: class TextSplitter
location: class blusunrize.lib.manual.TextSplitterTest
Error:(121, 17) java: method does not override or implement a method from a supertype
Error:(127, 17) java: method does not override or implement a method from a supertype
Error:(132, 17) java: method does not override or implement a method from a supertype
Error:(137, 17) java: method does not override or implement a method from a supertype
Error:(142, 17) java: method does not override or implement a method from a supertype
Error:(148, 17) java: method does not override or implement a method from a supertype
B:\ProgrammingProj\ImmersiveEngineering\src\test\java\blusunrize\immersiveengineering\api\wires\utils\CatenaryTracerTest.java
Error:(11, 43) java: cannot find symbol
symbol: class ApiUtils
location: package blusunrize.immersiveengineering.api
Error:(12, 49) java: cannot find symbol
symbol: class Connection
location: package blusunrize.immersiveengineering.api.wires
Error:(13, 49) java: cannot find symbol
symbol: class ConnectionPoint
location: package blusunrize.immersiveengineering.api.wires
Error:(14, 49) java: cannot find symbol
symbol: class WireType
location: package blusunrize.immersiveengineering.api.wires
Error:(15, 33) java: package com.google.common.collect does not exist
Error:(16, 33) java: package com.google.common.collect does not exist
Error:(17, 37) java: package it.unimi.dsi.fastutil.doubles does not exist
Error:(18, 37) java: package it.unimi.dsi.fastutil.objects does not exist
Error:(19, 37) java: package it.unimi.dsi.fastutil.objects does not exist
Error:(20, 45) java: package net.minecraft.client.renderer.texture does not exist
Error:(21, 26) java: package net.minecraft.item does not exist
Error:(22, 31) java: package net.minecraft.util.math does not exist
Error:(23, 31) java: package net.minecraft.util.math does not exist
Error:(24, 31) java: package net.minecraft.util.math does not exist
Error:(37, 30) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(39, 47) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(39, 60) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(120, 44) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(120, 74) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(148, 39) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(148, 52) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(148, 17) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(159, 51) java: cannot find symbol
symbol: class WireType
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(175, 38) java: cannot find symbol
symbol: class Connection
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest.TestWiretype
Error:(187, 51) java: cannot find symbol
symbol: class Connection
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest.TestWiretype
Error:(187, 24) java: cannot find symbol
symbol: class TextureAtlasSprite
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest.TestWiretype
Error:(199, 46) java: cannot find symbol
symbol: class Connection
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest.TestWiretype
Error:(199, 24) java: cannot find symbol
symbol: class ItemStack
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest.TestWiretype
Error:(37, 52) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(41, 17) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(43, 34) java: cannot find symbol
symbol: class DoubleAVLTreeSet
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(49, 46) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(49, 70) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(51, 46) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(51, 71) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(53, 46) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(53, 73) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(55, 17) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(55, 48) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(55, 75) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(67, 41) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(67, 73) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(80, 25) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(80, 56) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(80, 85) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(84, 51) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(84, 37) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(89, 62) java: cannot find symbol
symbol: variable ApiUtils
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(90, 69) java: cannot find symbol
symbol: variable MathHelper
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(100, 25) java: cannot find symbol
symbol: class Object2IntMap
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(100, 39) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(100, 64) java: cannot find symbol
symbol: class Object2IntOpenHashMap
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(101, 25) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(101, 56) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(101, 82) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(104, 35) java: illegal start of type
Error:(107, 29) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(108, 41) java: cannot find symbol
symbol: variable BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(109, 45) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(110, 45) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(111, 45) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(107, 63) java: cannot find symbol
symbol: variable ImmutableMap
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(113, 25) java: cannot find symbol
symbol: class Object2IntMap
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(113, 39) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(113, 64) java: cannot find symbol
symbol: class Object2IntOpenHashMap
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(114, 35) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(122, 17) java: cannot find symbol
symbol: class CatenaryTracer
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(122, 44) java: cannot find symbol
symbol: variable Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(122, 60) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(123, 21) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(131, 21) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(131, 56) java: cannot find symbol
symbol: variable BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(131, 40) java: cannot find symbol
symbol: variable ImmutableSet
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(132, 21) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(136, 55) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(137, 21) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(141, 55) java: cannot find symbol
symbol: class BlockPos
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(142, 43) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(143, 39) java: cannot find symbol
symbol: variable Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(144, 43) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(145, 43) java: cannot find symbol
symbol: class Vec3d
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(150, 17) java: cannot find symbol
symbol: class WireType
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest
Error:(151, 17) java: cannot find symbol
symbol: class Connection
location: class blusunrize.immersiveengineering.api.wires.utils.CatenaryTracerTest

When will a new version for CurseForge be released then that includes the fix?

Whenever I get around to it.

Much appreciated. Thank you.

I'm afraid we do not offer assistance in compiling the mod yourself.