[v@vonunov ~/perl]$ ./get-wus-bad.pl infile.txt outfile.txt
Can't locate object method "getElementsByClassName" via package
        "HTML::TagParser::Element" at ./get-wus-bad.pl line 32, <$infh> line 1 (#1)
    (F) You called a method correctly, and it correctly indicated a package
    functioning as a class, but that package doesn't define that particular
    method, nor does any of its base classes.  See perlobj.
    
Uncaught exception from user code:
        Can't locate object method "getElementsByClassName" via package "HTML::TagParser::Element" at ./get-wus-bad.pl line 32.