Don't be too hasty blaming Max.

I have seen (including just today) on BT Sport catch-up (or live)

Error VC410 (with fatuous explanations that don't fit the scenario)

re-fresh, log in again and bingo - no sign of error.

This may be something to do with Micro$oft updates, browser updtes, BT's CDN ( wizardry to prioritise video content - providing you have paid a bit more) or some magic update in Linux servers around the world.

Who knows - they aren't telling.