API to Trigger a new Build by Project (preview) is broken


#1

I’m trying to start a build from this endpoint (https://circleci.com/docs/api/v1-reference/#new-project-build)

If I try it passing a branch, it seems to work, but I need to pass a tag but then I get a 500 error.

curl -X POST --header "Content-Type: application/json" -d '{"tag":"staging"}' https://circleci.com/api/v1.1/project/:vcs-type/:username/:project/build?circle-token=:token

And I get:

{"message":"An internal server error occurred."}

Similar to: API to Trigger a new Build by Project (preview) fails


#2

Can you give us the actual command that you are running (without the token).