Flywheel ShaderLoadingException: Could not load all shaders

What it looks like in the log

com.jozufozu.flywheel.backend.loading.ShaderLoadingException: Could not load all shaders, see log for details

How to fix it

1. Update Create and Flywheel to the latest release available for your Minecraft version, as early versions (such as Create 0.3.2 with Flywheel 0.1.0) had a known macOS shader crash fixed in subsequent patches.
2. If the game still crashes on macOS or older graphics hardware, open config/flywheel-client.toml in your Minecraft folder and set backend = "OFF" (or enabled = false in older Flywheel configs) to bypass custom shader rendering.
3. Remove OptiFine or other shader/rendering mods and temporarily move custom resource packs out of the resourcepacks folder to rule out broken shader overrides.
4. Update your GPU drivers directly from NVIDIA, AMD, or Intel, and inspect logs/latest.log just before the crash stack trace if you need to see which specific shader file failed to compile.

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