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 uri="" key="login" method="post" uuid="9616238E-1997-11EA-AA52-80C547F95FFE" encoding="&#x2713;">
    <field widget="text" attrs="" value="" id="uuid-961652D2-1997-11EA-AA52-80C547F95FFE" display="Username" name="username" key="username"/>
    <field id="uuid-96167E2E-1997-11EA-AA52-80C547F95FFE" display="Password" name="password" key="password" attrs="" widget="password"/>
    <field id="uuid-9616B042-1997-11EA-AA52-80C547F95FFE" value="" name="submit" display="Login" key="submit" widget="submit" attrs=""/>
  </form>
</response>