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 uuid="EBDBF794-19B3-11F1-B0BD-7BC62597109C" method="post" key="login" uri="" encoding="&#x2713;">
    <field attrs="" id="uuid-EBDC2D40-19B3-11F1-B0BD-7BC62597109C" display="Username" value="" key="username" widget="text" name="username"/>
    <field attrs="" id="uuid-EBDC7534-19B3-11F1-B0BD-7BC62597109C" display="Password" key="password" widget="password" name="password"/>
    <field attrs="" id="uuid-EBDCBB48-19B3-11F1-B0BD-7BC62597109C" display="Login" value="" key="submit" widget="submit" name="submit"/>
  </form>
</response>