Cannot use drone

in Report a Bug
I could not use drone. I tried to use drone, the message “サーバエラーです” (“It is server error.”) is appeared on the bottom of the screen.
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I could not use drone. I tried to use drone, the message “サーバエラーです” (“It is server error.”) is appeared on the bottom of the screen.
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For some reason, I can use the drone now. This problem has been resolved.