Environment

• Minecraft Version: 1.21.1
• NeoForge Version: 21.1.206
• WATUT Version: 1.21.0-1.2.7
• Other Rendering Mods Installed: Sodium, ImmediatelyFast, FancyMenu, Konkrete, etc.

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Crash Report Snippet

Caused by: net.minecraft.server.ChainedJsonException: Invalid shaders/core/particle.json: File not found
at net.minecraft.client.renderer.ShaderInstance.(ShaderInstance.java:157)
at com.corosus.watut.ShaderInstanceBlur.(ShaderInstanceBlur.java:27)
at net.minecraft.client.renderer.GameRenderer.handler$dmo000**$watut$**onLoadShaders(GameRenderer.java:8265)

Full crash log available upon request.

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Description

When launching the client with WATUT installed, the game crashes during shader reload.
WATUT attempts to initialize its blur shader but references the vanilla shader file shaders/core/particle.json, which appears to be missing or inaccessible in 1.21.1.
It's a rare crash, not always occurring.

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Steps to Reproduce

1. Install Minecraft 1.21.1 with NeoForge 21.1.206
2. Place WATUT 1.21.0-1.2.7 in the mods folder.
3. Launch the game.
4. The client crashes during startup while shaders are reloading.

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Expected Behavior

• Game should load normally.
• WATUT blur shader should initialize without errors.

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Actual Behavior

• Client crashes with error:
  Invalid shaders/core/particle.json: File not found

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Additional Notes

• Removing or disabling WATUT resolves the crash.
• Other rendering-related mods are installed, but the stacktrace clearly points to WATUT’s ShaderInstanceBlur.
• Suspected cause: the shader path or file changed in 1.21.1, leaving WATUT unable to locate particle.json.

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watutbug.mp4

This is slowly becoming pretty anoying. We decided to remove the mod until a fix is available.