Error in 3.0.0-beta4 - Cannot read property 'get' of undefined httpGet

[klihelp]

This error only comes up in the browser console.

TypeError: Cannot read property 'get' of undefined
    at WpApiPages.WpApiParent.httpGet

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Using webpack based starter project: https://github.com/Websitescity/ng2-f6-starter
Worked with version 3.0.0-beta3

[shprink]

beta5 should fix the problem. please confirm

[klihelp]

Thanks you, works well:)