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 encoding="&#x2713;" method="post" uri="" key="login" uuid="ED039E6E-1993-11EA-85F7-1B080BBD1946">
    <field widget="text" display="Username" attrs="" id="uuid-ED03D1C2-1993-11EA-85F7-1B080BBD1946" key="username" name="username" value=""/>
    <field key="password" widget="password" display="Password" id="uuid-ED04CA5A-1993-11EA-85F7-1B080BBD1946" attrs="" name="password"/>
    <field key="submit" display="Login" attrs="" id="uuid-ED04FFDE-1993-11EA-85F7-1B080BBD1946" widget="submit" value="" name="submit"/>
  </form>
</response>