Internal server error after edit / create - Wikidata

24 Jan 2016

Hello everyone, 

I'm having some issues with my wikidata installation, any help would be appreciated.

I'm getting stuck on an "Internal server error" after a Mediawiki + Wikibase
repo installation via GIT + update of wikibase via composer, the wikibase is functional
but after adding 1 element or 1 property, any other add of elements returns an Internal
server error, and I have to wait for several minutes before it's fine again, for only
1 addition of element and then error again.

I have no particular errors in my php logs or apache logs, just - error 500.

Here are the versions installed :

MediaWiki	1.27alpha (b3a82ca)
PHP	5.4.45-0+deb7u2 (fpm-fcgi)
MySQL	5.5.46-0+deb7u1-log
ICU	4.8.1.1
Wikibase Repository	0.5 alpha (62c267)

I can add some wiki pages (non-wikibase stuff), modify them, no problems.

When I try to add an element or property, the first time I try it works, then a few
seconds later I can't add a second element I get an "error 500 - internal server
error", and I can't get it work until about 30 minutes / 1 hour then I can add
another element and then again nothing !

I think I might have a namespace problem but how to configure it and keep my other wiki
pages ?

Thanks in advance !

Regards,
Jeremy