Hello guys,

I just installed mwlib via 

easy_install mwlib && rehash && easy_install mwlib.rl 

 
The tutorial I used was 
https://www.mediawiki.org/wiki/Extension:PDF_Writer#Custom_render_server - 
with hundreds of messages while compiling - then I started the rendering 
server with:

nserve & mw-qserve & nslave --cachedir ~/cache/ & postman &

 
on my mwlib-user on Ubuntu 18.04.2 LTS.

Now when a page is to be rendered I recieve this error on the console:

+protocol error <10 172.16.12.65:46026>: Expecting value: line 1 column 1 
> (char 0)
> Traceback (most recent call last):
>   File "src/gevent/greenlet.py", line 817, in gevent._greenlet.Greenlet.run
>   File "build/bdist.linux-x86_64/egg/qs/rpcserver.py", line 96, in 
> readlines
>     line = sockfile.readline()
>   File "/usr/lib/python2.7/socket.py", line 451, in readline
>     data = self._sock.recv(self._rbufsize)
>   File 
> "/usr/local/lib/python2.7/dist-packages/gevent-1.5a1-py2.7-linux-x86_64.egg/gevent/_socket2.py",
>  
> line 297, in recv
>     self._wait(self._read_event)
>   File "src/gevent/_hub_primitives.py", line 290, in 
> gevent.__hub_primitives.wait_on_socket
>   File "src/gevent/_hub_primitives.py", line 295, in 
> gevent.__hub_primitives.wait_on_socket
>   File "src/gevent/_hub_primitives.py", line 277, in 
> gevent.__hub_primitives._primitive_wait
>   File "src/gevent/_hub_primitives.py", line 46, in 
> gevent.__hub_primitives.WaitOperationsGreenlet.wait
>   File "src/gevent/_hub_primitives.py", line 46, in 
> gevent.__hub_primitives.WaitOperationsGreenlet.wait
>   File "src/gevent/_hub_primitives.py", line 55, in 
> gevent.__hub_primitives.WaitOperationsGreenlet.wait
>   File "src/gevent/_waiter.py", line 151, in gevent.__waiter.Waiter.get
>   File "src/gevent/_greenlet_primitives.py", line 61, in 
> gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
>   File "src/gevent/_greenlet_primitives.py", line 61, in 
> gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
>   File "src/gevent/_greenlet_primitives.py", line 65, in 
> gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
>   File "src/gevent/__greenlet_primitives.pxd", line 35, in 
> gevent.__greenlet_primitives._greenlet_switch
> cancel_wait_ex: [Errno 9] File descriptor was closed in another greenlet
> 2019-07-17T12:05:42Z <Greenlet at 0x7f5a4e3e9aa0: readlines> failed with 
> cancel_wait_ex


Could it be a compilation error in  gevent?

Thanks,
Jens

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