Read the statement by Michael Teeuw here.
Update to 2.11 mirror stop working
I recently update to 2.11 but after the update the mirror completely stop working anyone know what’s wrong here
@yipyip55 did you use my upgrade script or do it manually?
to fix this do
bash -c "$(curl -sL https://raw.githubusercontent.com/sdetweil/MagicMirror_scripts/master/fixsandbox)"
@sdetweil I do it manually, now I use your script to fix it, And the mirror back to normal again thank you Sam