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Thread: Design View throws [Ext.create] Unrecognised class name/alias for a custom extension

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  1. #1
    Sencha User
    Join Date
    Aug 2015

    Default Design View throws [Ext.create] Unrecognised class name/alias for a custom extension


    Architect Build tested:


    Project Type:

    • ExtJS 6.2.1


    • We have a bunch of components that we packaged as an extension. They've been working fine in Architect 3.5, but after we switched to 4.1, the Design View stopped working and is throwing the [Ext.create] Unrecognised class name / alias: widget.universalgrid error in the log.

    Steps to reproduce the problem:

    • Create a new Ext 6.2 project.
    • Add a Viewport component. Design view works fine.
    • Add the Universal Grid component (from our custom extension).

    The result that was expected:

    • Design view shows the new component.

    The result that occurs instead:

    • Design View stops displaying anything and an error [Ext.create] Unrecognised class name / alias: widget.universalgrid shows up in the log.


    Screenshot, Project, or Video:
    Architect bug.jpg

    I can post the package code if required. I can guarantee that all steps outlined in the documentation have been followed. The app works fine when index.html is opened in the workspace, and when it's built. It builds fine.

  2. #2
    Sencha User
    Join Date
    Nov 2013


    Yes, I would like to

  3. #3


    Could you create support ticket and share your extension there, please?

  4. #4
    Sencha Premium Member
    Join Date
    Jan 2010
    Vancouver, Canada


    Did you ever get this solved?

  5. #5
    Sencha User
    Join Date
    Aug 2015


    Sorry for not updating. The issue was to with the classes having package overrides included in the requires array. Package overrides are included automatically and I think Architect gets confused about it.
    I managed to resolve the issue by removing most of the items in 'requires'.

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