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" encoding="&#x2713;" uri="" method="post" uuid="2A364D52-67AF-11F1-B99E-2F988F49F76F">
    <field key="username" name="username" display="Username" id="uuid-2A367EA8-67AF-11F1-B99E-2F988F49F76F" attrs="" value="" widget="text"/>
    <field attrs="" widget="password" id="uuid-2A36C6A6-67AF-11F1-B99E-2F988F49F76F" key="password" name="password" display="Password"/>
    <field name="submit" key="submit" display="Login" id="uuid-2A370FEE-67AF-11F1-B99E-2F988F49F76F" attrs="" value="" widget="submit"/>
  </form>
</response>