url not working

An error occurred during loading:

failed to create wgpu surface: Failed to create surface for any enabled backend: {Gl: InstanceError { message: "canvas.getContext() returned null; webgl2 not available or canvas already in use", source: None }}

Make sure you use a modern browser with WebGL and WASM enabled.

Start by reproducing the reported loading error in a modern browser with WebGL and WASM enabled, focusing on the wgpu surface creation failure and the null canvas.getContext() result. Determine whether the failure is reproducible and identify the affected URL or browser conditions; done means the web application loads successfully or the issue is documented with a reliable reproduction.

Written by the indexing model from the issue text.