Error using axesm. It says "checkellipsoid' for input arguments of type 'double'"

Hi!

I am getting the following error while using axesm

>> axesm
Undefined function 'checkellipsoid' for input arguments of type 'double'.

Error in resetmstruct (line 28)
    checkellipsoid(mstruct.geoid, 'resetmstruct', 'mstruct.geoid');

Error in axesm (line 58)
        mstruct = resetmstruct(mstruct);

Please help.

Thanks in advance.