Use of uninitialized value $s in substitution (s///) at /usr/local/share/perl/5.22.1/Furl/HTTP.pm line 202. Use of uninitialized value $v in concatenation (.) or string at /usr/local/share/perl/5.22.1/Furl/HTTP.pm line 204. malformed JSON string, neither tag, array, object, number, string or atom, at character offset 0 (before "\n