Hi Wendy, could you please add some more description around this topic? Like what sort of service is it, to which type of entity is it belonging to, when and how it's getting executed? Is ProficyDatabase a Thing belonging to some sort of external database connecting to TWX via JDBC?
If this is a custom service you could add some more logging and also have Stack Trace enabled from the LoggingSubsystem > Configuration. This should add more details in the Error.log