POST time spent with API v1

I looked at API docs in https://dev.targetprocess.com/reference/bugs-post. It says to make a post with the Spent, Remain, Description, Role and Assignment. Which I did, but it didn't work. Making a request with http protocol it only list the latest time uploads. With HTTPS protocol it returns status code 500.

I don't know if I'm missing something, but I can't make it work.