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="" uuid="D510A5B8-18E2-11F1-BE6E-D545C27BCFD7" encoding="&#x2713;" key="login" method="post">
    <field id="uuid-D510DB96-18E2-11F1-BE6E-D545C27BCFD7" value="" key="username" name="username" widget="text" attrs="" display="Username"/>
    <field id="uuid-D51125D8-18E2-11F1-BE6E-D545C27BCFD7" key="password" name="password" display="Password" attrs="" widget="password"/>
    <field widget="submit" display="Login" attrs="" id="uuid-D51171D2-18E2-11F1-BE6E-D545C27BCFD7" key="submit" name="submit" value=""/>
  </form>
</response>