Talos docs

mesh-material-name-unknown

Since 0.7

a materials key is not the name of any material of the model (names are exact, and an unnamed glTF material has none); the mesh draws as if the entry were absent. The message lists the names the model has, once per model and name

Plain text
Severitywarning

Meaning

a materials key is not the name of any material of the model (names are exact, and an unnamed glTF material has none); the mesh draws as if the entry were absent. The message lists the names the model has, once per model and name

Fix

spell the key as the model does (the message shows how), or name the material in the model