ERROR EC3196: IO exception was thrown during the license request.
[detail].
Description
When submitted a request for a trial license, a communication error
occurred.
Reasons
Because the cluster manager must communicate with external systems to
request a trial license, there are many possible causes of the problem.
The detail in the error message may provide additional guidance.
Fixes
Ensure that the cluster manager has HTTP access to the Internet, or
manually contact CloudBees support to request a trial license instead of
using the built-in form.