I am having issues with the OAuth. It says client_Id not found and when I run it in sandbox mode, the browser just shows a white screen. Attaching both the links here.
I’m Square Dev AI, here to help answer your question!
Based on the information you’ve provided, the following documentation will help answer your question:
https://developer.squareup.com/docs/oauth-api/walkthrough2
Additional Documentation
OAuth Walkthrough: Test Authorization with Web Server
Square Sandbox
OAuth API
If this documentation helped you find a solution, please check the box indicating that this reply solves the problem.
Otherwise one of our Developer Advocates will provide additional assistance shortly.
The issue you’re experiencing might be due to a typo in your authorization URL. The URL parameters should be separated by an “&” symbol. In your URL, it seems like there’s no “&” symbol between your client_id and scope parameters.
The corrected URL should look like this:
Please try using this corrected URL and see if the issue persists.
This answer was reviewed by @Bryan-Square.
Also do you have the sandbox seller Dashboard open?