It looks like the source code of your APK is looking for a package server.
Read this on how to create an APK for responsive-native: React-Native - Creating a Signed APK
If your devices are connected via cable:
- If you are on a physical device connected to the same computer, run 'adb reverse tcp: 8081 tcp: 8081' to redirect requests from your device.
Otherwise, you can do it via Wifi, following the last point of the error:
- If your device is on the same Wi-Fi network, set "Host and port debug server" in "Dev Settings" to your device IP address and port of the local development server, for example, 10.0.1.1:8081
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