Error message

[mauro_george]

Hi all,

I've been using Trello for a couple of years now...very helpful with writing charts for the other musicians in my group.

However, recently I've been getting this error message and cannot call up any of the charts or .mp3s which have always worked in the past...very odd.  Does anyone know what this means?  Thanks

Error: Promise.withResolvers is not a function

and then a whole lot of numbers, letters, .js (java script?)

I'm using a 2015 MacBook Pro w/ Firefox running OS Sierra 10.12.6, if that helps

cheers

g