[2026-07-03T10:22:15+00:00] ERROR: OAuth token request returned empty token | {"env":"sandbox","response_code":401,"paypal_error":"invalid_client","paypal_desc":"Client Authentication failed","attempt":1,"correlation_id":"ab8bc7ab-6abb-41fc-88ef-fb2a77f8e7c2"}
[2026-07-03T10:22:15+00:00] ERROR: PayPal API: missing OAuth token, cannot proceed | {"path":"\/v2\/checkout\/orders","correlation_id":"e251ef6b-a6d4-4771-8bc3-56574842d84d"}
[2026-07-03T10:22:15+00:00] ERROR: PayPal API: create order failed | {"order_id":"","status":"","error":"Missing OAuth token","correlation_id":"7121135e-caa1-430f-9b41-88e098f59aad"}
[2026-07-03T10:22:15+00:00] ERROR: PayPal create order failed | {"error":"Missing OAuth token","amount":10,"currency":"USD","correlation_id":"c3085fbb-cd84-49d5-a947-bd28f4d122b3"}