problem: M-a M-e gives symbol's function definition is voide

[Krishnakant]

Dear all,

I am really confused as to what might have happened in this case.

I open a file in python-mode

there is lot of code in it.

now when I try doing M-a or M-e to move back and forth between function 
or class definition, I get the said error mentioned in the subject.

I use emacs 24.5 on Ubuntu 16.04 LTS and I have elpy with company-mode 
enabled.

Can some one tell me what must be going wrong here?

I actually can't use any navigation function in python-mode because I 
get the same error "symbol's function definition is voide ..." for any 
shortcut I press.

of course M-C-i works with company so I know other things are going correct.

Indentation also works correctly.

But it is very important for me to move between blocs of code (one of 
the major reasons I have shifted to emacs ).

Happy hacking.

Krishnakant.