Ionic 5/Capacitor ERR_CLEARTEXT_NOT_PERMITTED in Android

Solution 1:

Add this to you AndroidManifest.xml in the application element

<application
    android:usesCleartextTraffic="true"

When you specify the server in your Capacitor config, you should set server.cleartext to true to prevent this issue from happening. Example:

{
  "appId": "com.abc",
  "appName": "abc",
  "npmClient": "npm",
  "server": {
    "url": "http://192.168.1.208:8100", 
    "cleartext": true
  }
}

This is not very well documented - the only place I found this configuration being used was on https://capacitorjs.com/docs/guides/live-reload