I usually use empty description. I using app tool to check request before implementing it in code but it shows same error. My request is:
Post method
Url: https://api.twitch.tv/helix/streams/markers
Headers:
Content-Type: Application/json
Authorization: Bearer *******************
Body:
{“user_id”:“147603574”,“description”:""}
Not sure exact method to show you request properly so i just sticked info i using in app to make post request. But the thing is that i don’t think i doing something wrong since i can’t create markers using even native methods, like through dashboard or chat command as well…