Unable to compile 'nameofsub': Global symbol "$sth" requires explicit package name at (eval 17) line 4. Global symbol "$cat" requires explicit package name at (eval 17) line 6. Global symbol "$sth" requires explicit package name at (eval 17) line 6. Global symbol "$cat" requires explicit package name at (eval 17) line 7. Global symbol "$cat" requires explicit package name at (eval 17) line 7. Global symbol "$cat" requires explicit package name at (eval 17) line 8. Global symbol "@gcats" requires explicit package name at (eval 17) line 10.