Hi @Forever_Just, thank you for the detailed report, it’s very helpful. 
We haven’t been able to reproduce this issue on our end yet, so we need a little more information to narrow down the problem.
Does this happen on the website’s media section or on Netflix? Or does the error only appear on YouTube?
Are you using a VPN? If so, which country do you select?
When the error occurs, open Chrome DevTools (F12) → the “Network” tab, filter by “Fetch/XHR,” and send a screenshot. Also, take a screenshot of the “Console” tab.
Does the issue also occur in Incognito mode with all other extensions disabled (only Language Reactor enabled)?
Thank you for your patience; we’re trying to figure out what might be causing the translation error.