Syntax errors in multidimensional histogram specification pass silently, and simply cause the histogram not to be created

I can create a MWE if necessary, but for now I'll just report the bug.

Any sort of syntax error in the specification of a THnSparseF, such as for runAnalysis.multidimHistograms, will cause no error to be reported in the runAnalysis stage, but then the histogram will never be created.