When I try to merge two users I get an error:
- [0a2fe910b4519b6b687ee482] 2017-04-09 18:50:36: שגיאה חמורה מסוג "DBQueryError"
The mediawiki version I'm using is 1.28 and I have the right version of usermerge (branch hash: 55971e5dde4ac29783d6eb3c5d49d7b8dcffbc4f).
In the apache log I have the following message:
- [Sun Apr 09 21:50:36.855136 2017] [:error] [pid 9938] [client 141.226.217.117:38691] PHP Notice: Undefined offset: 1 in /var/www/html/w/extensions/UserMerge/MergeUser.php on line 342, referer: https://www.betmidrash.org.il/index.php/%d7%9e%d7%99%d7%95%d7%97%d7%93:%d7%9e%d7%99%d7%96%d7%95%d7%92_%d7%9e%d7%a9%d7%aa%d7%9e%d7%a9%d7%99%d7%9d
any idea why it happens?