これはバグやね
Storage APIはHTTPSページ(かlocalhost)じゃないと使えないことになってる
Misskeyはそういう環境でアクセスすることを前提に組んじゃってる
https://github.com/misskey-dev/misskey/blob/4f65c1529b034785de0b2bec1023f909270c7df8/packages/frontend/src/utility/storage.ts#L11
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