An FYI for everyone in case this starts cropping up again for other users.
My TV Anywhere stopped working all of a sudden (and no updates to the system).
So I took a look and asked the UI to refresh, et al, and Snap was denying access to the channelsdvr/snap/chromium/ folder
I eventually delete the TV Anywhere source, and tried to recreate it. No luck.
I've searched around everywhere and nothing worked. If anyone knows how to bully snap into submission, please let me know.
However, for the moment as a workaround, I downloaded an older Chrome using coolluser968165's post from way back in January last year. Ubuntu 20.04 TVE issue with chromium package - #17 by coolluser968165
That fixed it.