52131: Invalid APNs credentialsERROR: 52131error-52131 page anchorNOTIFICATIONSERROR Error - 52131error---52131 page anchor Invalid APNs credentialsinvalid-apns-credentials page anchor Possible Causespossible-causes page anchor Credential (certificate and private key) is invalid. Certificate expired. Possible Solutionspossible-solutions page anchor Make sure you have valid certificate and private key provided in your Credential.