<color=#FFCC00>LDtk:</color> Tried to build the internal icons "Internal_Icons", But the internal icons was not assigned in Unity's project settings. You can add the texture by going to Edit > Project Settings > LDtk To Unity

<color=#FFCC00>LDtk:</color> Loading artifacts didn't work for getting tileset sprite artifacts. You should investigate the tileset file at "Assets/Tests/Misc/TestEntityImportInterface/TestEntityImportInterface/Internal_Icons.ldtkt"