Unity Toon Shader: WebGL Build Results in Shader Compilation Errors and White Screen

[SyouChiga]

I am glad to meet you

I am writing to ask for your help, as I am currently experiencing an error that I cannot understand with my knowledge.

Please take a moment to read the following brief description.

Environment Details:

Unity Version: 6000.0.27f1
URP Version: 17.0.3
Unity Toon Shader Version: 0.10.2-preview
Issue:
When building for WebGL, the game screen becomes completely white, and the following shader errors appear repeatedly in the console:

Shader Skybox/Procedural: GLSL compilation failed, no infolog provided
Shader Hidden/Universal Render Pipeline/Bloom: GLSL compilation failed, no infolog provided
Shader Hidden/Universal Render Pipeline/UberPost: GLSL compilation failed, no infolog provided
Notes:

This issue only occurs in WebGL builds; playing in the Unity Editor works fine.
The errors appear whenever objects with Unity Toon Shader applied are rendered on the screen.

[sindharta-tanuwijaya]

Hello.
First of all, thank you for your valuable feedback.

Due to the company reset last year, we at Unity have had to deprioritize the development of the ToonShader package.
Consequently, we are currently unable to implement new features or address existing bugs.

However, the ToonShader team remains passionate about the project, and is enthusiastic about resuming active development when circumstances allow. I’ll be sure to keep you updated on any progress.

We appreciate your understanding and support.