what is ?

[Puneet Kishor]

Folks,

Happy new year to all of you.

I am receiving the following message repeated over and over (different line number) in a script I am writing...

Use of uninitialized value in sort at /Users/pkishor/Sites/eidesis/test.pl line 200, <GEN0> line 1.

I searched Google to try find an answer... I can't fathom what is <GEN0>. Could anyone kindly shed some light?