C2008: Requirement had no matching files (Ext.plugin.Viewport)

[dnv2006]

I use Ext JS 6.5 . I follow official tutorial: http://docs.sencha.com/extjs/6.5.0/g...login_app.html

I have webapp: https://github.com/donhuvy/TutorialApp . When run

sencha app build

I see error:

[ERR] C2008: Requirement had no matching files (Ext.plugin.Viewport) -- /Users/donhuvy/Documents/source_code/github.com/donhuvy/TutorialApp/app.js:11:242
[ERR] 
[ERR] BUILD FAILED
[ERR] com.sencha.exceptions.ExBuild: Failed to find any files for /Users/donhuvy/Documents/source_code/github.com/donhuvy/TutorialApp/app.js::ClassRequire::Ext.plugin.Viewport
[ERR] 
[ERR] Total time: 1 second
[ERR] The following error occurred while executing this line:
/Users/donhuvy/bin/Sencha/Cmd/6.5.0.180/ant/build/app/build-impl.xml:387: The following error occurred while executing this line:
/Users/donhuvy/bin/Sencha/Cmd/6.5.0.180/ant/build/app/init-impl.xml:408: com.sencha.exceptions.ExBuild: Failed to find any files for /Users/donhuvy/Documents/source_code/github.com/donhuvy/TutorialApp/app.js::ClassRequire::Ext.plugin.Viewport

How to fix it?

[hakimio]

"Ext.plugin.Viewport" only exists in classic toolkit and you put that requirement in the "app.js" which is shared between the modern and classic toolkits. Either create separate "application" files for each toolkit and only require the plugin for classic toolkit or only build classic toolkit app.