Provider: KeyAgreement.ECDH algorithm from: BC javax.net.ssl|SEVERE|9B|https-jsse|2020-11-02
07:44:41.643 PST|TransportContext.java:319|Fatal (INTERNAL_ERROR): null (
"throwable" : {
  java.lang.NullPointerException
        at org.bouncycastle.crypto.signers.PSSSigner.generateSignature(Unknown Source)
        at org.bouncycastle.jcajce.provider.asymmetric.rsa.PSSSignatureSpi.engineSign(Unknown Source)
        at java.security.Signature$Delegate.engineSign(Signature.java:1382)
        at java.security.Signature.sign(Signature.java:698)
        at sun.security.ssl.CertificateVerify$T12CertificateVerifyMessage.<init>(CertificateVerify.java:608)
        at sun.security.ssl.CertificateVerify$T12CertificateVerifyProducer.produce(CertificateVerify.java:760)
        at sun.security.ssl.SSLHandshake.produce(SSLHandshake.java:420)
        at sun.security.ssl.ServerHelloDone$ServerHelloDoneConsumer.consume(ServerHelloDone.java:182)