Issue with NetApp WFA package

Hey,

I just wanted to start using WFA package with vCO. I have installed HTTP-REST plugin and imported WFA package. After running WFA Workflow (GET WFA Workflow Inputs) I'm getting below error:

Connection pool shut down (Workflow:Invoke a REST operation / REST call (item0)#6)

Any one has an idea what the issue is?

Regards

Zbyszek