Error: Metadata version mismatch for module found version 4

[dtgfranca]

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

@ionic/cli-utils  : 1.19.3
ionic (Ionic CLI) : 3.20.1

global packages:

cordova (Cordova CLI) : 8.0.0 

local packages:

@ionic/app-scripts : 3.2.3
Cordova Platforms  : browser 5.0.4
Ionic Framework    : ionic-angular 3.6.1

System:

Android SDK Tools : 26.1.1
Node              : v10.8.0
npm               : 6.2.0 
OS                : Linux 4.13

Environment Variables:

ANDROID_HOME : /opt/android-sdk-linux

Misc:

backend : pro

The problem occurs when I run this code:
npm run ionic:build -- --prod

Could anybody help me with this issue?