Describe the bug
My game fails to start up during step 2/7 of initialization. The error I received is:

[21:12:28] [Client thread/FATAL] [laggoggles]: Required mixins that have not been applied:
[21:12:28] [Client thread/FATAL] [laggoggles]: - cf.terminator.laggoggles.mixin.MixinEntity targeting: net.minecraft.entity.Entity

A better excerpt is linked below. I couldn't include the full files due to size limits, but please let me know if there's any missing information.

To Reproduce
I am between modpack updates at the moment so unfortunately I cannot link you the current changelogs. However, here is my full modlist: https://pastebin.com/iY4xKQcW

Here is a list of only the mods that I have changed today: https://pastebin.com/fjeFzgi8

It's worth mentioning that I had been using the THIN version, but switched to FAT after the crash in case that helped. It did not. I also deleted the entire config folder and allowed them to regenerate in case there was an issue there, but I still got the same error.

If you are using SpongeForge, which version are you using?
I am not.

Please provide the early startup messages starting with [LagGoggles-Boot]

[21:10:55] [main/INFO] [LagGoggles-Boot]: I am located here: file:\C:\Users\Katu\Documents\Curse\Minecraft\Instances\EnthusiastiCraft%20(2)\mods\LagGoggles-FAT-1.12.2-4.8.jar!\cf\terminator\laggoggles\Main.class
[21:10:55] [main/INFO] [LagGoggles-Boot]: I am designed for Forge version: 14.23.5.2838
[21:10:55] [main/INFO] [LagGoggles-Boot]: Loading client classes
[21:10:55] [main/INFO] [LagGoggles-Boot]: SpongeForge is not present!
[21:10:55] [main/INFO] [LagGoggles-Boot]: We're running in a production environment.

If you used the word 'error' somewhere, always provide the stack trace along with both debug.log and latest.log
https://pastebin.com/0RPHMq2r - latest.log excerpt
https://pastebin.com/kDFfb2i8 - debug.log excerpt

Please let me know if you need any other information!

Oh! I forgot to include:

Minecraft version: 1.12.2
Forge version: forge-1.12.2-14.23.5.2838-universal
LagGoggles version: LagGoggles-FAT-1.12.2-4.8 (and) LagGoggles-THIN-1.12.2-4.8

This is because p455w0rdslib is installed. Issue #71 goes into more detail, and has more crossreferences if you wish to have more context.