why I am getting a cut bode plot of peak current mode control of buck converter (demos)?

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hello everyones,
I am trying to get the frequency response of the demos given Buck Converter with Peak Current Control and using as reference the Buck Converter with AC Sweep Analysis. however I am getting weir result as you can see in teh attached file. I am not getting all the gain value and phase value of all frequencies which means I miss something in using the AC sweep block.
any help is welcome

Answers (2)

SimTec
SimTec on 20 Feb 2018
Edited: SimTec on 20 Feb 2018
here it is

SimTec
SimTec on 20 Feb 2018
Edited: SimTec on 20 Feb 2018
this is my model. I have tried as well to use the linear analysis tool and still I AM GETTING errors-

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