The buttons that bring up the popups for downloading an Icalc file and Editing a current calendar event no longer work. Using the Developer Window an error results when clicking on the buttons.
editpopupJQ.js?3.4.48:139 Uncaught TypeError: jQuery(...).modal is not a function
at launchModal (editpopupJQ.js?3.4.48:139)
at jevIdPopup (editpopupJQ.js?3.4.48:255)
at <anonymous>:1:1
Uploaded attachment of Page.
Any Ideas how to Fix?