Minecraft v1.14.4
Forge v28.1.115
Better Foliage v2.5.0
Kottle v1.4.0
Mixin Bootstrap v1.0.0
Immersive Portals v0.10

Since both Immersive Portals & Better Foliage require Mixin Bootstrap to function, I'm getting a crash as soon as I try to start the game. Is this something that can be fixed?
Crash Log

I'm also getting the "game crashed" error whenever I put MixinBootstrap in the mod folder (I don't use Immersive Portals). If I remove MixinBootstrap, BetterFoliage will still load, but there are no changes to the game, i.e. no round logs, no changes to the leaves, etc.

I need to investigate this further, this is completely new territory for me (1st time using mixins).
@rtng2 what other mods are you using?

Forge v28.1.0
Better Foliage v2.5.0
Kottle v1.4.0
Mixin Bootstrap v1.0.0
OptiFine 1.14.4 HD U F5

mods folder :

Well, I haven't tried using Forge v28.1.115 yet, maybe that could be the issue?

Yeah, your forge is probably outdated. Try providing the crash report too.

Yes you're right, the error disappears when I use Forge v28.1.115.
Just wanna let @octarine-noise know, the mod still looks buggy :

I hope you have an Nvdia card, because then the answer is simple. Edit the BF config file, and set
nVidia = true

It's a bit awkward now, as there is no Forge config GUI yet and for technical reasons I can't autodetect the default setting anymore.

Can you please tell me where BF config file is? Is it \mods\betterfoliage\client\config\Config.class? I'm not proficient in Java and not really sure how to set nVidia = true.

You don't need to go into the betterfoliage mod jar. Instead go to .minecraft/config folder and in there is a file called betterfoliage-client.toml.

@octarine-noise
Immersive Portals put out v0.11 that fixes the crash, but logs are not round and reeds seem to have a squished texture, it gives an error in chat only that says betterfoliage.rendererror. Round logs work if Immersive Portals is removed.

@rtng2 the location of the config file is config/betterfoliage-client.toml under your instance directory. There will be other directories like mods, saves, resourcepacks etc. under it.

However, where your instance is located depends on which launcher you are using.
In the Mojang launcher, instances are listed under "installations", you can click on the one you're using to edit it, and look at the "game directory" option. (if it says "default" then I give up, I always put my instances into specific directories)

@WenXin20 it probably has something to do with Immersive Portals having multiple worlds loaded at the same time on the client. I tried to account for that, but probably overlooked something. I'll come back to fixing it after BF for Fabric comes out.

Closing the issue, as the original problem seems to be fixed