Obtaining certificate chain for xmlapi.sandbox.paypal.com, one moment while we download the xmlapi.sandbox.paypal.com certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for xmlapi.sandbox.paypal.com, one moment while we re-check the xmlapi.sandbox.paypal.com certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for xmlapi.sandbox.paypal.com failed
Sorry, the request for xmlapi.sandbox.paypal.com could not be completed...
We could not load the certificate for xmlapi.sandbox.paypal.com, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.