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 uuid="E1D30E52-C3E4-11EA-8B6D-7336B7D749F2" key="login" uri="" encoding="&#x2713;" method="post">
    <field id="uuid-E1D3430E-C3E4-11EA-8B6D-7336B7D749F2" value="" key="username" attrs="" name="username" widget="text" display="Username"/>
    <field key="password" display="Password" widget="password" attrs="" name="password" id="uuid-E1D371DA-C3E4-11EA-8B6D-7336B7D749F2"/>
    <field id="uuid-E1D3A844-C3E4-11EA-8B6D-7336B7D749F2" key="submit" value="" attrs="" name="submit" widget="submit" display="Login"/>
  </form>
</response>