Ofbiz start-up error

[Jim]

Trying to install Ofbiz for the first time but when I try and run 
./gradlew loadDefault, I get an exception 'Execption in thread "main" 
javax.net.ssl.SSLexception: java.lang.RuntimeException: Unexpected 
error: Java.security.InvalidAlgorithmParameterExceptioin: the trust 
Anchors parameter must be non-empty' --- any thoughts?

Thanks