Got Http response code 400 when accessing https://api.sandbox.paypal.com/v1/identity/openidconnect/tokenservice.
{
"error_description": "Invalid Refresh Token",
"error": "invalid_user",
"correlation_id": "93ab3f0b4d1a9",
"information_link": "https://developer.paypal.com/docs/api/#errors"
}