You will see this exception when:
var ctx1 = newContext(verifyMode = CVerifyNone)
var ctx2 = newContext(verifyMode = CVerifyNone)
var ctx3 = newContext(verifyMode = CVerifyNone)
I noticed that the exception was raise by:
result.extraInternalIndex = getExtraDataIndex(result)
assert result.extraInternalIndex == 0
This problem had affected my asyncdocker module. I can't create ssl connection with specified key file, cert file and CA certificate file.