Uncaught error:java.net.Exception:Failed to connect to/127.0.0.1:19000

Expo SDK
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Please provide the following:
1./SOLUTION:
2. Platforms(Android/iOS/web/all):

Replace this section with as much relevant information as possible and any relevant code along with your question.

2

Hi Guys,

Did anyone find solution for this issue?

I am using the latest Expo SDK 40 on an Android simulator and I am getting this error

Uncaught Error: java.net UnknownHostException: Unable to resolve host.

13:02:38 Fatal Error

3

Hi,

To connect from your android emulator to the localhost you have to use the following IP: 10.0.2.2:80.

In the emulator environment, 127.0.0.1:(port) will reference the emulator localhost and not the localhost on your computer.

10.0.2.2 is a special alias to your host loopback interface ( or 127.0.0.1 ). So just using the other IP in your emulator will work just like using 127.0.0.1 on a localhost request.

You can read more about it here and here

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