why it reports error to the chrome add-on?

[Kirizen]

it report like these: unrecognized manifest key "applications" "applications": { "gecko": { "id": "{b52a151e-ab46-4c1c-9587-8323103ed04b}", "strict_min_version": "57.0" } },

[LittleSaltFish]

Me too.The icon is gray.

[Kahdeg-15520487]

You can just remove those line cause that one is used in firefox