look at https://tools.wmflabs.org/replag/ => 500 Server Internal Error
or results like this
https://tools.wmflabs.org/templatecount/index.php?lang=de&namespace=10&name=Cite+web
Warning: mysqli::mysqli(): (HY000/2003): Can't connect to MySQL server on 'dewiki.labsdb' (111) in /data/project/jarry-common/public_html/libs/database.php on line 27 Call Stack: 0.0130 710128 1. {main}() /data/project/templatecount/public_html/index.php:0 0.7229 3510720 2. dbconnect() /data/project/templatecount/public_html/index.php:52 0.7320 3515320 3. mysqli->mysqli() /data/project/jarry-common/public_html/libs/database.php:27