as of today, I am currently unable to launch my modloader with Immersive Portals and Better Bedrock Generator (among other mods), both of which require MixinBootstrap. was able to recreate the modpack without those mods and the bootstrap, and it launches fine, but as soon as I add either one of those mods and the bootstrap, it gives the following message: "ERROR Game Crashed An unexpected issue occurred and the game has crashed. We're sorry for the inconvenience."

running on forge version 28.1.117; additional information can be provided upon request

Same issue: https://github.com/nevoka-be/BetterBedrockGenerator/issues/2
The developer didn't backport the fix to 1.14.4

Same issue: nevoka-be/BetterBedrockGenerator#2
The developer didn't backport the fix to 1.14.4

that wouldn't explain why it was working until yesterday, but not today... literally nothing changed

Interesting, The fix is present in BBG v1.14.4-0.0.4 but not in BBG v1.14.4-0.0.5

alright, can confirm the issue does seem to have been fixed by reverting to BBG v1.14.4-0.0.4, which apparently I updated but do not recall doing so...

Can you provide the debug.log? And provided a list of mods with the version you are running.

Can you provide the debug.log? And provided a list of mods with the version you are running.

where do I find the debug.log? and here's the mod list

for what it's worth though, I just set up a test profile on Twitch with just Immersive Portals and Better Bedrock Generator, and I'm getting the same error

This issue has been fixed in BBG v1.14.4-0.0.6