$ sudo -u etherpad ./run.sh
[sudo] Passwort for....
Ensure that all dependencies are up to date...  If this is the first time you have run Etherpad please be patient.
Ensure jQuery is downloaded and up to date...
Clearing minified cache...
Ensure custom css/js files are created...
Started Etherpad...
[2016-12-02 13:58:08.849] [WARN] console - DirtyDB is used. This is fine for testing but not recommended for production.
/usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:50
      res.push("<dt>" + hook.hook_name + "</dt><dd>" + hook.hook_fn_name + " from " + hook.part.full_name + "</dd>");
                                          ^

RangeError: Maximum call stack size exceeded
    at _ (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:40:13)
    at Function._.chain (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:1473:20)
    at flatten (/usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:111:9)
    at /usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:120:52
    at Function._.each._.forEach (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:153:9)
    at _.(anonymous function) [as each] (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:1496:34)
    at flatten (/usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:111:28)
    at /usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:120:52
    at Function._.each._.forEach (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:153:9)
    at _.(anonymous function) [as each] (/usr/share/webapps/etherpad-lite/src/node_modules/underscore/underscore.js:1496:34)
    at flatten (/usr/share/webapps/etherpad-lite/src/static/js/pluginfw/plugins.js:111:28)