OpenGL Crash: GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT

What the log looks like

java\.lang\.RuntimeException: GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT[\s\S]{0,300}?(?:Framebuffer|RenderTarget)

How to fix it

1. If OptiFine is installed, remove its `.jar` from the `mods` folder (or disable Video Settings -> Performance -> Fast Render in `optionsof.txt` by setting `ofFastRender:false`).
2. If you are playing on Android/Linux ARM via PojavLauncher or a similar launcher, switch the renderer in your launcher settings from Holy GL4ES (OpenGL 2.1 wrapper) to VirGL, Zink, or LTW/MobileGlues, as standard GL4ES does not support modded stencil framebuffers.
3. If you are using Create on a low-end GPU, open `config/flywheel-client.toml` (or `create-client.toml` in newer versions) and set the Flywheel backend to `OFF` (`backend = "OFF"`).
4. On a Windows or Linux PC, ensure Minecraft is running on your dedicated NVIDIA or AMD GPU rather than integrated graphics, and install the latest graphics driver directly from your GPU manufacturer.
5. Check that your game window is not minimized or resized to zero pixels while Minecraft finishes loading, as zero-sized windows cause incomplete framebuffer attachments on some drivers.

Check your own log