Talos docs

build.material-layer-missing

Since 0.6

a file a material file's layers need (a layer material named by path from the material's folder, or a texture that layer names from its own folder) is not in this revision; the layer is left out at run time (HD) rather than the scene refused. Also on a scene write, checked on disk

Plain text
Severitywarning

Meaning

a file a material file's layers need (a layer material named by path from the material's folder, or a texture that layer names from its own folder) is not in this revision; the layer is left out at run time (HD) rather than the scene refused. Also on a scene write, checked on disk

Fix

put the file where the message says, or fix the layer's path