Spyce exception

File:

/var/www/html/avia/rss/index.spy

Message:

AttributeError: 'NoneType' object has no attribute 'replace'

Stack:

index.spy:11, in xq:

    return s.replace('&', '&amp;').replace('"', '&quot;').replace("'", '&apos;').replace('<', '&lt;').replace('>', '&gt;')

index.spy:76, in (main):

=xq(p["author"])