Execution failed for task ':app:processDebugResources'

This error occurs when I run -

Cordova build android

Full Error -

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Failed to execute aapt

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 10s
    at ChildProcess.whenDone (/Users/anujsingh/Documents/ionic/logs/platforms/android/cordova/node_modules/cordova-common/src/superspawn.js:169:23)
    at ChildProcess.emit (events.js:182:13)
    at maybeClose (internal/child_process.js:961:16)
    at Socket.stream.socket.on (internal/child_process.js:380:11)
    at Socket.emit (events.js:182:13)
    at Pipe._handle.close [as _onclose] (net.js:595:12)
(node:637) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)

ionic info

cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

global packages:

    cordova (Cordova CLI) : 8.0.0 

local packages:

    @ionic/app-scripts : 3.1.10
    Cordova Platforms  : android 7.0.0
    Ionic Framework    : ionic-angular 3.9.2

System:

    Android SDK Tools : 26.1.1
    Node              : v10.4.1
    npm               : 6.1.0 
    OS                : macOS High Sierra

Environment Variables:

    ANDROID_HOME : /Users/anujsingh/Library/Android/sdk

Misc:

    backend : pro

I tried every previous given solution in the forum

[anujsinghwd]

This resolves my issue :- Go to platforms/app/src/main/res/values/strings.xml and add these lines :

<string name="fb_app_id">Your Facebook APP ID</string>
<string name="fb_app_name">YOur Facebook App Name</string>

[imhoffd]

@anujsinghwd What exactly resolved the issue? Please post the solution so future readers can be helped as well.