Since about a week or more uploading with
mapillary_tools results in
HTTP Error 403: Forbidden (see https://github.com/mapillary/mapillary_tools/issues/358).
There has been a similar issue with Web Uploader which has been resolved. However the issue with
mapillary_tools persists. This has been reported by various users.
Please check and fix your API. Various users are waiting with photos to be uploaded.