throwing script exception: pair '' and 'undefined' has unmatching types 'string' and 'undefined'

^1******* script runtime error *******
pair '' and 'undefined' has unmatching types 'string' and 'undefined': (file 'maps/mp/gametypes/_globallogic.gsc', line 4352)
  if ( isDefined( level.players[entry].killedPlayers[""+self.clientid] ) )
                                                       *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************
throwing script exception: undefined is not an array index

^1******* script runtime error *******
undefined is not an array index: (file 'maps/mp/gametypes/_globallogic.gsc', line 4352)
  if ( isDefined( level.players[entry].killedPlayers[""+self.clientid] ) )
                                                       *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************
throwing script exception: pair '' and 'undefined' has unmatching types 'string' and 'undefined'

^1******* script runtime error *******
pair '' and 'undefined' has unmatching types 'string' and 'undefined': (file 'maps/mp/gametypes/_globallogic.gsc', line 4355)
  if ( isDefined( level.players[entry].killedPlayersCurrent[""+self.clientid] ) )
                                                              *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************
throwing script exception: undefined is not an array index

^1******* script runtime error *******
undefined is not an array index: (file 'maps/mp/gametypes/_globallogic.gsc', line 4355)
  if ( isDefined( level.players[entry].killedPlayersCurrent[""+self.clientid] ) )
                                                              *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************
throwing script exception: pair '' and 'undefined' has unmatching types 'string' and 'undefined'

^1******* script runtime error *******
pair '' and 'undefined' has unmatching types 'string' and 'undefined': (file 'maps/mp/gametypes/_globallogic.gsc', line 4358)
  if ( isDefined( level.players[entry].killedBy[""+self.clientid] ) )
                                                  *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************
throwing script exception: undefined is not an array index

^1******* script runtime error *******
undefined is not an array index: (file 'maps/mp/gametypes/_globallogic.gsc', line 4358)
  if ( isDefined( level.players[entry].killedBy[""+self.clientid] ) )
                                                  *
^1called from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 49)
 [[level.callbackPlayerDisconnect]]();
         *
^1started from:
(file 'maps/mp/gametypes/_callbacksetup.gsc', line 46)
CodeCallback_PlayerDisconnect()
*
^1************************************