VanillaFix crashing without the Essential mod

[Xonazeth]

Environment:

• Minecraft Version: 1.12.2

• Forge Version: 14.23.5.2860

• VanillaFix Version: 1.0.10-150

• Essential Version: 1.12.2

Description:
When running VanillaFix 1.0.10-150 alongside the Essential mod, the game launches just fine. But without the Essential mod, the game crashes with the message "Unknown".

Steps to Reproduce:

• Install Forge 14.23.5.2860.

• Add VanillaFix 1.0.10-150 without Essential mod to the mods folder.

• Launch the game.

Expected Behavior:
Game should launch without the need of the Essential mod.