Can not create session

Hi everybody

I create session but i'm facing with error "Failed to parse input"

my response:

{
    "error": "invalid_request",
    "error_description": "Failed to parse input.",
    "error_code": 1
}

i use postman and sent from link:

https://webapi.teamviewer.com/api/v1/sessions?groupid=g75436837&description=I have aproblemwith myspace bar

i used method POST. I try use api get full list session and it run success, but i create session same above i get error. Please help me, thanks.