It can happen on your system, TV, or mobile devices.
We have noted this issue and search for & test some solutions.
you should probably remove this extension to get rid of the error.
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Many users have reflected this question.
They solve the issue by disabling Adblock.
Sideloaded extension issues
Several Netflix sideloaded extensions may be corrupted after some updates, but you dont know it.

This can also cause error code M7111-1931-404 on Netflix.
you better wait until Netflix solves the issue by itself.
If it persists, it’s possible for you to try the next method.

Method 2: Disable Adblock
Adblock can help you clock the ads you dont want to see.
But, unfortunately, it can also cause some issues including Netflix error code: M7111-1931-404.
Perhaps, you dont know whether your case is because of this element.

But, you’ve got the option to disable it to have a try.
it’s possible for you to re-enable it and then use the next solution to have a try.