https://golang.org/pkg/crypto/x509/#SystemRootsError indicates the OS's root certificate chain could not be loaded (unrelated to whether the specific APNs certificate is valid). Currently, that can't be recovered from, and the error is cached permanently.
https://golang.org/pkg/crypto/x509/#SystemRootsError indicates the OS's root certificate chain could not be loaded (unrelated to whether the specific APNs certificate is valid). Currently, that can't be recovered from, and the error is cached permanently.
See #256