Suddnely Cant Access my Profile

Every time I try to access my profile I get this....
Fatal error: Call to a member function check() on a non-object in /home/admin/public_html/inc/classes/BxDolTwigModule.php on line 979
Never had a problem before since I installed 7.1 until today.

Any Ideas?

Thanks,
Mel 

I have other alias's that work fine.  It's just my main profile that I can't access.

Most probably it is caused by Timeline (you can remove this block from Page Builder to check for sure).

If you have some 3rd-party module which was using Wall and was not updated yet to support Timeline - it can cause such error. 

Alex of course is correct.

I can duplicate this error by installing a module that "looks" like it is working for 7.1, but certain things are sent to the wall, which is no longer. It's the timeline module. When I try to access my profile it gives same error your getting. Would you like to see an example?

I suggest you remove all your 3rd party modules and install one at a time and test.

 Right on the money!!  Thanks AlexT!!