Scripted function "inSprint" compilation failure

After updating from Greenhopper 6.2.5.1 to JIRA Agile 6.3.0.1 when trying to view a Sprint in the Issue Navigator we are receiving the following error message: 'Scripted function "inSprint" compilation failure. Contact administrator. Message: Function failed to execute http method - failed with code: 404' (see Capture.PNG).

I have done a re-index and even tried to disable and renable the plugin with the same result. The update to the plugin was done through the Plugin Manager in JIRA. Our UPM is version 2.13.1.