13. https://github.com/bevyengine/bevy/pull/13766
A simple error message improvement. The error describes how a shader is "not loaded yet", but in most cases, the shader was *never* going to be loaded, likely due to a bad path. Both error messages are true, but the new one is a lot less misleading. This stuff adds up!
Great simple, easy to review fix from a new contributor. Merging.