Common Mistakes: name/label confusion in mod.json - for instance https://0ad.mod.io/ja-lang "name" should be a lowercase identifier, it usually matches the URL of your mod on mod.io: for instance "ja-lang" "label" is a human-readable name, it usually matches the title of the mod on mod.io: for instance "Japanese Language Pack" top-level extra directory. Your zip should contain directly mod.json and the rest of the files, it should not contain a sub-directo
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