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I sent "register for remote notifications" from my iOS app to get the Device token for push notifications.However, neither the success token "didRegisterForRemoteNotificationsWithDeviceToken" northe failure token "application: didFailToRegisterForRemoteNotificationsWithError"is returned from the Apple server.It happens immediately after the app is first installed and launched on the device.The above is done in sandbox mode. Is it a sandbox-specific problem?Is it a phenomenon that does not occur on the production server?The environment is as follows.iOS13xcode11.4
Please let me know if you know the workaround for this cause.
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ossan.
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ossan.
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