BulkOperation mutation to upload products causes INTERNAL_SERVER_ERROR

[Chadyka]

All queries/mutations that are described in the documentation are functional in testing all products uploaded manually via an HTTP client so I have no idea what the problem could be.

{"body":{"errors":[{"message":"Internal error. Looks like something went wrong on our end.\nRequest ID: 41c94cca-8cfb-477a-8b3d-0452f60fcd69 (include this in support requests).","extensions":{"code":"INTERNAL_SERVER_ERROR","requestId":"41c94cca-8cfb-477a-8b3d-0452f60fcd69"}}]},"headers":{}}