Messages are not getting displayed on pinterest board

I am able to post pins on my pinterest board, but somehow my “note” attribute is not recieving the message and not displaying it with the image.
I have trying to resolve the issue, also my limit exceeded, but now i have waited for an hour so it is back to normal. Kindly please look into my code and guide me.
mail.-sagar.1721cs1174@kiet.edu

Your request is wrong.
Check the facebook_post.py file for some hints.

Check these links.
https://developers.pinterest.com/tools/api-explorer/?
https://developers.pinterest.com/docs/api/boards/?

Sir I have tried and its working in explorer api as well.
Also response is returning the message but physically not displayed at the pinterest website.
I am not able to find the mistake.
Also i removed hardcoded board id from the data