infrae.wsgi error in apache error log

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Greetings Devs,

We're running Silva 2.3 (infrae.wsgi 1.3), Apache 2.2.3, mod_wsgi 3.3.  In
the apache error logs, at times we see the following output:

[Mon Aug 29 09:15:27 2011] [error] [client xxx] mod_wsgi (pid=26274):
Exception occurred processing WSGI script
'/home/zope/silva23/buildout/parts/mod_wsgi_app/wsgi'.
[Mon Aug 29 09:15:27 2011] [error] [client xxx] TypeError: sequence of byte
string values expected, value of type WSGIResponse found

It appears that these two lines are pairs, and are repeated intermittently
throughout the day.

I am unsure what request is causing this error, and have not been able to
reproduce.  I think that this error is a result of infrae.wsgi returning a
WSGIResponse rather than a string, which is a violation of the wsgi spec.  I
also think that this is likely happening due to some error condition within
zope, but I haven't been able to track it down.

Any idea what's going on?

thanks,
Andy

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Greetings Devs,<div><br></div><div>We&#39;re running Silva 2.3 (infrae.wsgi=
 1.3), Apache 2.2.3, mod_wsgi 3.3. =A0In the apache error logs, at times we=
 see the following output:</div><div><br></div><div><div>[Mon Aug 29 09:15:=
27 2011] [error] [client xxx] mod_wsgi (pid=3D26274): Exception occurred pr=
ocessing WSGI script &#39;/home/zope/silva23/buildout/parts/mod_wsgi_app/ws=
gi&#39;.</div>
<div>[Mon Aug 29 09:15:27 2011] [error] [client xxx] TypeError: sequence of=
 byte string values expected, value of type WSGIResponse found</div></div><=
div><br></div><div>It appears that these two lines are pairs, and are repea=
ted intermittently throughout the day.</div>
<div><br></div><div>I am unsure what request is causing this error, and hav=
e not been able to reproduce. =A0I think that this error is a result of inf=
rae.wsgi returning a WSGIResponse rather than a string, which is a violatio=
n of the wsgi spec. =A0I also think that this is likely happening due to so=
me error condition within zope, but I haven&#39;t been able to track it dow=
n.</div>
<div><br></div><div>Any idea what&#39;s going on?</div><div><br></div><div>=
thanks,</div><div>Andy</div><div><br></div><div><br></div><div><br></div>

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