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 method="post" uuid="D3C78FB6-78EE-11F1-BCC8-D1551BBD9EFC" key="login" encoding="&#x2713;" uri="">
    <field id="uuid-D3C7C238-78EE-11F1-BCC8-D1551BBD9EFC" attrs="" value="" display="Username" widget="text" name="username" key="username"/>
    <field name="password" key="password" id="uuid-D3C80554-78EE-11F1-BCC8-D1551BBD9EFC" attrs="" widget="password" display="Password"/>
    <field value="" display="Login" widget="submit" attrs="" id="uuid-D3C84EB0-78EE-11F1-BCC8-D1551BBD9EFC" key="submit" name="submit"/>
  </form>
</response>