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" method="post" uuid="4268E8D0-2008-11EA-85F1-A437FC0ABCF6" encoding="&#x2713;" uri="">
    <field value="" id="uuid-42692174-2008-11EA-85F1-A437FC0ABCF6" name="username" key="username" display="Username" widget="text" attrs=""/>
    <field id="uuid-42694E6A-2008-11EA-85F1-A437FC0ABCF6" name="password" key="password" attrs="" display="Password" widget="password"/>
    <field key="submit" name="submit" value="" id="uuid-42698588-2008-11EA-85F1-A437FC0ABCF6" widget="submit" display="Login" attrs=""/>
  </form>
</response>