When I try to open minecraft (with various mods) I get the following error:

Minecraft version: 1.12.2
Forge version: 14.23.5.2855
SecurityCraft version: From 1.9 onwards, versions lower than 1.9 do not give me the error.

This is the crash report (there is also the list of mods I use):
https://pastebin.com/AKDqJQB9

How am I sure it is SecurityCraft?
Because when the error occurred, I tried the mods one by one, until I tried SecurityCraft, and then I got the error.

Update SecurityCraft to v1.9.1, but use the additional file that is added on CurseForge, not the main one.
If that does not work, install Mixin 0.7-0.8 Compatibility.