uninitialized value $args{"file"}

[uncovery]

While it's working fine, I get the following output on every message sent:

Use of uninitialized value $args{"file"} in lc at /usr/share/perl5/vendor_perl/Net/XMPP/Debug.pm line 154.
Use of uninitialized value within @_ in lc at /usr/share/perl5/vendor_perl/XML/Stream/Parser.pm line 71.
Use of uninitialized value within @_ in lc at /usr/share/perl5/vendor_perl/XML/Stream/Parser.pm line 71.
Use of uninitialized value within @_ in lc at /usr/share/perl5/vendor_perl/XML/Stream/Parser.pm line 71.

this is an issue because I want to get valid error messages, but silence when it works fine.