The following error occurred in Titanium Mobile.

[WARN] attempted to load: TiUICoverFlowViewProxy
[WARN] Exception in event callback. {
    line = 22;
    message = "invalid method (createCoverFlowView) passed to UIModule";
    sourceId = 225212864;
}

This type of error can occur after adding a new type of component.

One thing to remember is that when you do a full build Titanium removes unused components from their API. So if you are adding a new type of component, for example, there are no textAreas in your app, and then you add a textArea, you may get this error. The solution is to force a total rebuild by clearing out the contents of your build/iphone directory

After deleting the files under build and rebuilding, it worked normally.

rm -rf build/iphone

That’s all.

【Reference】

・Invalid method (createToolbar) passed to UIModule on device » Community Questions & Answers » Appcelerator Developer Center

That’s all from the Gemba.