Error in 2D histogram projection

Derar Root users,
Hi !
With the attached I am trying to make & project 2D histograms. But when I try to do so, the program crashes with the following error message on the screen.
root [0] .x test.C
Error: Symbol G__exception is not defined in current scope test.C:325:
Error: type G__exception not defined FILE:/home/chamoli/ANU_DATA/myway/56Co0808_IPAC/./test.C LINE:325
*** Interpreter error recovered ***
root [1]
Please see the attached script and suggest, if I have done something wrong ?

Thanks & regards,
test.C (8.65 KB)

You forgot to post the data file