Unexpected non-MediaWiki exception encountered, of type "Error"
object(Error)#32 (7) {
  ["message":protected]=>
  string(33) "Call to undefined function each()"
  ["string":"Error":private]=>
  string(0) ""
  ["code":protected]=>
  int(0)
  ["file":protected]=>
  string(57) "/var/www/wiki.oilimperium.de/includes/GlobalFunctions.php"
  ["line":protected]=>
  int(132)
  ["trace":"Error":private]=>
  array(10) {
    [0]=>
    array(1) {
      ["function"]=>
      string(16) "wfArrayDiff2_cmp"
    }
    [1]=>
    array(3) {
      ["file"]=>
      string(57) "/var/www/wiki.oilimperium.de/includes/GlobalFunctions.php"
      ["line"]=>
      int(116)
      ["function"]=>
      string(11) "array_udiff"
    }
    [2]=>
    array(3) {
      ["file"]=>
      string(50) "/var/www/wiki.oilimperium.de/includes/EditPage.php"
      ["line"]=>
      int(466)
      ["function"]=>
      string(12) "wfArrayDiff2"
    }
    [3]=>
    array(5) {
      ["file"]=>
      string(50) "/var/www/wiki.oilimperium.de/includes/EditPage.php"
      ["line"]=>
      int(395)
      ["function"]=>
      string(23) "getEditPermissionErrors"
      ["class"]=>
      string(8) "EditPage"
      ["type"]=>
      string(2) "->"
    }
    [4]=>
    array(5) {
      ["file"]=>
      string(60) "/var/www/wiki.oilimperium.de/includes/actions/EditAction.php"
      ["line"]=>
      int(50)
      ["function"]=>
      string(4) "edit"
      ["class"]=>
      string(8) "EditPage"
      ["type"]=>
      string(2) "->"
    }
    [5]=>
    array(5) {
      ["file"]=>
      string(46) "/var/www/wiki.oilimperium.de/includes/Wiki.php"
      ["line"]=>
      int(428)
      ["function"]=>
      string(4) "show"
      ["class"]=>
      string(10) "EditAction"
      ["type"]=>
      string(2) "->"
    }
    [6]=>
    array(5) {
      ["file"]=>
      string(46) "/var/www/wiki.oilimperium.de/includes/Wiki.php"
      ["line"]=>
      int(292)
      ["function"]=>
      string(13) "performAction"
      ["class"]=>
      string(9) "MediaWiki"
      ["type"]=>
      string(2) "->"
    }
    [7]=>
    array(5) {
      ["file"]=>
      string(46) "/var/www/wiki.oilimperium.de/includes/Wiki.php"
      ["line"]=>
      int(588)
      ["function"]=>
      string(14) "performRequest"
      ["class"]=>
      string(9) "MediaWiki"
      ["type"]=>
      string(2) "->"
    }
    [8]=>
    array(5) {
      ["file"]=>
      string(46) "/var/www/wiki.oilimperium.de/includes/Wiki.php"
      ["line"]=>
      int(447)
      ["function"]=>
      string(4) "main"
      ["class"]=>
      string(9) "MediaWiki"
      ["type"]=>
      string(2) "->"
    }
    [9]=>
    array(5) {
      ["file"]=>
      string(38) "/var/www/wiki.oilimperium.de/index.php"
      ["line"]=>
      int(46)
      ["function"]=>
      string(3) "run"
      ["class"]=>
      string(9) "MediaWiki"
      ["type"]=>
      string(2) "->"
    }
  }
  ["previous":"Error":private]=>
  NULL
}