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="" encoding="&#x2713;" uuid="02C3FD20-C860-11F1-856C-08F38D6E13F8" method="post" key="login">
    <field name="username" attrs="" value="" id="uuid-02C42908-C860-11F1-856C-08F38D6E13F8" key="username" display="Username" widget="text"/>
    <field attrs="" name="password" id="uuid-02C4730E-C860-11F1-856C-08F38D6E13F8" key="password" display="Password" widget="password"/>
    <field attrs="" name="submit" value="" id="uuid-02C4BD78-C860-11F1-856C-08F38D6E13F8" key="submit" display="Login" widget="submit"/>
  </form>
</response>