Error while trying to export from blender to glTF

After adding textures to the model, when exporting to gif, there is an error, please tell me what kind of error and how to solve itphoto_2018-12-12_23-22-56

Are you using the latest version of the glTF Blender Importer/Exporter?

Only 2 days downloaded it, glTF 2.0

Reinstalled, now exported, before did according to this instruction, now textures are not displayed, please tell me why so

Maybe it makes more sense to file an issue at the github project of the exporter…