m0rpk, 
Looking for help from #JavaScript and / or Apple Mac people.
I have before me an old MacBook Pro running #MacOS 10.13.6. It can't be upgraded because of hardware constraints.
No browser on this device will render the #emfcamp schedule here: https://www.emfcamp.org/schedule/2024
I see JS console errors like "TypeError: Object.groupBy is not a function"
I've tried #Chrome, #Firefox, and #Safari.
Is it possible a script on that page relies on an OS feature this machine lacks?
