Problem compiling with cordova

I am having a problem when I try to run ionic cordova build --prod:


`ERROR in: Unexpected value 'BackButtonTabsModule in C: /Users/x/Desktop/x/app/node_modules/ion-back-button-tabs/bundles/ion-back-button-tabs.umd.js' imported by the module' SettingsModule in C: /Users/x/Desktop/x/app/src/app/pages/settings/settings.module.ts'. Please add a @NgModule annotation.`

Any idea how to solve it?