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 key="login" uri="" encoding="&#x2713;" method="post" uuid="E99684BA-817B-11F1-86EB-49AAF8248A5F">
    <field display="Username" name="username" value="" widget="text" key="username" attrs="" id="uuid-E996BD86-817B-11F1-86EB-49AAF8248A5F"/>
    <field id="uuid-E997005C-817B-11F1-86EB-49AAF8248A5F" attrs="" widget="password" key="password" display="Password" name="password"/>
    <field attrs="" id="uuid-E997465C-817B-11F1-86EB-49AAF8248A5F" display="Login" name="submit" widget="submit" key="submit" value=""/>
  </form>
</response>