That didn't help either, same error:

 [mpm_prefork:notice] [pid 26692] AH00163: Apache/2.4.7 (Ubuntu) 
PHP/5.5.9-1ubuntu4.21 OpenSSL/1.0.1f mod_wsgi/4.5.15 Python/2.7 configured 
-- resuming normal operations
 [core:notice] [pid 26692] AH00094: Command line: '/usr/sbin/apache2'
 [wsgi:error] [pid 26699] [client ...] Timeout when reading response 
headers from daemon process 'web2py': .../web2py/wsgihandler.py, referer: 
...

Not too sure how to debug this further, any idea?


On Friday, April 28, 2017 at 12:50:56 PM UTC+2, Nicolas Petitclerc wrote:
>
> Hi,
>
> I need to update pandas - web2py uses the Ubuntu distribution version 
> (which is getting old Pandas 0.17.0). So I pip installed the latest version 
> into 'web2py/site-packages/' but then the page hangs for like 5min and then 
> all I get is this error message in /var/log/apache2/error.log :
> [Fri Apr 28 10:24:17.228021 2017] [core:error] [pid 8261] [client 
> 81.133...] End of script output before headers: wsgihandler.py, referer: 
> https://.../user/login?_next=/... 
>
> And I get a 'Internal Server Error' in the browser.
>
> Any idea, what could be wrong, or help debugging this further?
>
> Setup: Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.21 OpenSSL/1.0.1f 
> mod_wsgi/3.4 Python/2.7.6
>
> BTW I tried switching to nginx, but that opened up an other can of worm... 
> and I ended up giving up after getting a Segmentation Fault from uwsgi... 
>  in hindsight I should have checked if it was that same issue with pandas, 
> but I curled up in a ball and cried instead...
>
> PS updating pandas also updates: six, numpy and dateutil 
>
> Thanks,
> Nicolas
>

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