XSLT Error

Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.

Response XML

<?xml version="1.0"?>
<response>
  <form encoding="&#x2713;" key="login" uri="" uuid="2BB68E90-C7CB-11F1-815E-CAEF0B50D6CE" method="post">
    <field widget="text" display="Username" value="" name="username" key="username" id="uuid-2BB6C0E0-C7CB-11F1-815E-CAEF0B50D6CE" attrs=""/>
    <field attrs="" widget="password" display="Password" name="password" id="uuid-2BB70780-C7CB-11F1-815E-CAEF0B50D6CE" key="password"/>
    <field name="submit" id="uuid-2BB7514A-C7CB-11F1-815E-CAEF0B50D6CE" key="submit" widget="submit" display="Login" value="" attrs=""/>
  </form>
</response>