I've implemented an integration with PayPal PHP SDK pointing to SandBox to do tests of my application. It was working until a month back, and today tried to test the workflow and I find this issue: When I open the payment url I get this message: "Things don’t appear to be working at the moment. Please try again later." And the URL has this error code: REVGQVVMVA Checked all params on my request, and nothing has changed from when it used to work. Any ideas why might I be receiving this error message?
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