'undefined method `aasm_state' in aasm gem related issue

I'm using ruby 2.0.0 and rails 3.2.22. I have problem regarding aasm gem. When I'm checking the aasm state on particular object I'm getting error

For example if @advisor.suspended?, where advisor is object and state is suspended, I'm getting error as:

undefined method `aasm_state' for #<Advisor:0x000000060da8f8>

please reply if anybody has faced the same issue.



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