Crashes when opening files with empty layers

[AwesomeAxolotl]

Thanks for creating this. The title says it and the error message points to it as well:

thread 'tokio-runtime-worker' panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-24.0.3/src/backend/wgpu_core.rs:1187:26:
wgpu error: Validation Error

Caused by:
  In Device::create_bind_group, label = 'mixing_bind_group'
    Buffer with 'chunk_buffer' label binding size is zero

After I deleted empty layers in my file it loaded successfully. Let me know if you need a sample file.