I tryie to register my library (hosted on Gitlab) using the web interface. But I saw this message:

Failed to find a branch containing a valid package description file:
master: Unexpected reply for 'https://gitlab.com/api/v4/projects/tech.vindex%2Famalthea/repository/files/%2Fdub.json/raw?ref=c297ae6a25e0f14eb3b5214fe6d22c6681d9bbdf&privatetoken=***': Bad Request
dev: Unexpected reply for 'https://gitlab.com/api/v4/projects/tech.vindex%2Famalthea/repository/files/%2Fdub.json/raw?ref=081d01ad99d2121a8d3d674eeaf2c02f3f05bf08&private
token=***': Bad Request