AllPairsDistance()

Hello friends, help, I created a symmetric matrix whose graph is 17 * 17, but in trying to apply the command AllPairsDistance (C6) (C6 is the name of the matrix), I do not yield results, only the following:

[[`17` x 17 Matrix], ['Data Type: anything `] [` Storage `rectangular], [` Order `Fortran_order]]

I do not know how to do to get the results!

Thank you for your help.


Thank you very much ...