returns
{"meta":{"code":200,"requestId":"57584284498eb387bce1a614"},"response":{"venues":[],"confident":false}}
It just starting doing this today before it worked perfectly.
I emailed the foursquare API team regarding this issue at the following address: [email protected]
I received the following email from them
Thanks for reporting this - I really apologize for the errors! We are looking into into the issue and working to get it resolved. It appears to only be effecting venue/search requests that supply a top level categoryId and ll. Please let me know if there's any other info regarding this error.
So once the issue is addressed, the API requests should start working again.