Problem with Collection: ERR: No JSON object could be decoded: line 1 column 0 (char 0)

[Johann Gründl]

Hi,

I can't make PDF-Files (or other formats) with the Collection-extension on my new MediaWiki installation under http://wiki.johanngruendl.at. I already posted a few days ago and wanted to edit my postings below. That was not possible and after I deleted them I could not answer to the topic anymore (so please someone with the rights to do so delete it). The reason I wanted to edit it is that I simplified my config to make it easier to find the problem.

This is are the (in my opinion) relevant parts of my config:

# Server
$wgScriptPath = "/w";
$wgArticlePath = "/view/$1";
$wgUsePathInfo = true;
$wgScriptExtension  = ".php";
$wgEnableAPI = true;

# Userrights
$wgGroupPermissions['*']['read'] = true;

# Collection
require_once("$IP/extensions/Collection/Collection.php");

When I try to get a PDF for an article (or a book) I get this error (in this case for http://wiki.johanngruendl.at/view/Republic.com, I am sorry everything is in German):

Auf dem Render-Server ist ein Fehler aufgetreten: RuntimeError: RuntimeError: command failed with returncode 256: ['mw-zip', '-o', '/home/pp/cache/ec/ec91f6dde7c5f759/collection.zip', '-m', '/home/pp/cache/ec/ec91f6dde7c5f759/metabook.json', '--status', 'qserve://localhost:14311/ec91f6dde7c5f759:makezip', '--config', 'http://wiki.johanngruendl.at/w', '--template-blacklist', 'MediaWiki:PDF Template Blacklist', '--template-exclusion-category', u'Vom Druck ausschlie\xdfen', '--print-template-prefix', 'Drucken', '--print-template-pattern', '$1/Druck'] Last Output: 2012-10-18T09:46:05 mwlib.options.warn >> Both --print-template-pattern and --print-template-prefix (deprecated) specified. Using --print-template-pattern only. 1% creating nuwiki in u'/home/pp/cache/ec/ec91f6dde7c5f759/tmpNKo2Mk/nuwiki' ERR: No JSON object could be decoded: line 1 column 0 (char 0) ERR: No JSON object could be decoded: line 1 column 0 (char 0) ERR: No JSON object could be decoded: line 1 column 0 (char 0) ERR: No JSON object could be decoded: line 1 column 0 (char 0) Traceback (most recent call last): File "/home/pp/local/lib/python2.7/site-packages/gevent/greenlet.py", line 327, in run result = self._run(*self.args, **self.kwargs) File "/home/pp/local/lib/python2.7/site-packages/mwlib/apps/make_nuwiki.py", line 120, in run self.fetch_pages_from_metabook(api) File "/home/pp/local/lib/python2.7/site-packages/mwlib/apps/make_nuwiki.py", line 60, in fetch_pages_from_metabook fetch_images=not self.options.noimages) File "/home/pp/local/lib/python2.7/site-packages/mwlib/net/fetch.py", line 269, in __init__ siteinfo = self.get_siteinfo_for(self.api) File "/home/pp/local/lib/python2.7/site-packages/mwlib/net/fetch.py", line 418, in get_siteinfo_for return m.get_siteinfo() File "/home/pp/local/lib/python2.7/site-packages/mwlib/net/sapi.py", line 169, in get_siteinfo raise RuntimeError("could not get siteinfo") RuntimeError: could not get siteinfo <Greenlet at 0x1d06e10: <bound method start_fetcher.run of <mwlib.apps.make_nuwiki.start_fetcher object at 0x1d63050>>> failed with RuntimeError removing tmpdir u'/home/pp/cache/ec/ec91f6dde7c5f759/tmpNKo2Mk' memory used: res=17.4 virt=131.9 1% error Traceback (most recent call last): File "/home/pp/local/bin/mw-zip", line 9, in <module> load_entry_point('mwlib==0.13.10', 'console_scripts', 'mw-zip')() File "/home/pp/local/lib/python2.7/site-packages/mwlib/apps/buildzip.py", line 155, in main make_zip(output, options, env.metabook, podclient=podclient, status=status) File "/home/pp/local/lib/python2.7/site-packages/mwlib/apps/buildzip.py", line 50, in make_zip make_nuwiki(fsdir, metabook=metabook, options=options, podclient=podclient, status=status) File "/home/pp/local/lib/python2.7/site-packages/mwlib/apps/make_nuwiki.py", line 193, in make_nuwiki pool.join(raise_error=True) File "/home/pp/local/lib/python2.7/site-packages/gevent/pool.py", line 99, in join raise greenlet.exception RuntimeError: could not get siteinfo in function system, file ./bin/nslave.py, line 64 in function qaddw, file /home/pp/local/lib/python2.7/site-packages/qs/slave.py, line 66

I can access the siteinfo through api.php:

http://wiki.johanngruendl.at/w/api.php?action=query&meta=siteinfo
http://wiki.johanngruendl.at/w/api.php?action=query&meta=siteinfo&format=jsonfm

I also tried to send e-mails for debugging purposes from within Collection.body.php with the parameters for mwServeCommand and couldn't find anything suspicious. base_url is set correctly. Any ideas what to look for?

Best regards and sorry for the double post,

Johann

[Johann Gründl]

And of course I forgot the versions again:
MediaWiki 1.19.2
Collection 1.6.1 (I had the identical error with 1.5.1)

[Ralf Schmitt]