The SHRINE hub encountered an exception while parsing the results from an adapter.
More than likely, the remote site responded with a non-i2b2-formatted message. This typically indicates an error from Tomcat or Apache.
If you are a user, send the complete details of this error to your site admin.
If you are a site admin, examine the message body provided in the details. The exact underlying problem can vary wildly, due to the nature of this error.