Describe the issue briefly
What is the endpoint of pinterest API?
How much time have you spent debugging this issue?
(Please spend at least 15 minutes to resolve the issue on your own before posting a new topic here)
What is your hypothesis?
You can read about what is an end point from the above link.
And to test the Pinterest API you use Pinterest API explorer.
By using this you can check if the API request that you make is correct or not.
Let me know if the reply was helpful or not.
Closing this topic as your issue is resolved by the mentor. If it is still not resolved, please feel free to create a new topic and post this question as a reference link in the description of the new topic.