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="" key="login" method="post" uuid="5D8BA412-198D-11EA-AE90-A6BB47F95FFE" encoding="&#x2713;">
    <field name="username" display="Username" key="username" id="uuid-5D8BCE56-198D-11EA-AE90-A6BB47F95FFE" value="" widget="text" attrs=""/>
    <field id="uuid-5D8BFA16-198D-11EA-AE90-A6BB47F95FFE" name="password" display="Password" key="password" widget="password" attrs=""/>
    <field display="Login" key="submit" name="submit" value="" id="uuid-5D8C2C16-198D-11EA-AE90-A6BB47F95FFE" widget="submit" attrs=""/>
  </form>
</response>