Fahrzeug wird nicht erstellt

function createMysqlVehicle ( besitzer, model, x, y, z, rx, ry, rz, c1, c2, c3, c4, c5, c6, paintjob )
	if besitzer and model and x and y and z and rx and ry and rz and c1 and c2 and c3 and c4 and c5 and c6 and paintjob then
		local sql = dbQuery(handler,"SELECT * FROM `vehicles` WHERE Besitzer = ?", besitzer)
		local result, rowindex = dbPoll(sql,-1)
		for i, row in ipairs(result) do 
			if i ~= tonumber(row["Slot"]) then
				local time = getRealTime()
				local stamp = time.timestamp
				math.randomseed(stamp)
				local serie
				for i = 1,10 do 
					local number = math.random(65,90)
					local ascii = string.format("%c",number)
					serie = serie..""..ascii
				end
				local query = "INSERT INTO `vehicles` (`Besitzer`,`Slot`,`Model`,`SpawnX`,`SpawnY`,`SpawnZ`,`RotX`,`RotY`,`RotZ`,`C1`,`C2`,`C3`,`C4`,`C5`,`C6`,`Paintjob`,`Seriennummer`) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
				dbExec(handler,query,besitzer,i,model,x,y,z,rx,ry,rz,c1,c2,c4,c4,c5,c6,paintjob,serie)
				local vehicle = createVehicle(model,x,y,z,rx,ry,rz,besitzer)
				setVehicleColor(vehicle,c1,c2,c3,c4,c5,c6)
				setVehiclePaintjob(vehicle,paintjob)
				setElementData(vehicle,"Besitzer",besitzer)
				setElementData(vehicle,"Seriennummer",serie)
				setElementData(vehicle,"Slot",i)
				setElementData(vehicle,"SpawnX",x)
				setElementData(vehicle,"SpawnY",y)
				setElementData(vehicle,"SpawnZ",z)
				setElementData(vehicle,"RotX",rx)
				setElementData(vehicle,"RotY",ry)
				setElementData(vehicle,"RotZ",rz)
				setElementData(vehicle,"C1",c1)
				setElementData(vehicle,"C2",c2)
				setElementData(vehicle,"C3",c3)
				setElementData(vehicle,"C4",c4)
				setElementData(vehicle,"C5",c5)
				setElementData(vehicle,"C6",c6)	
				setElementData(vehicle,"Paintjob",paintjob)
				setElementData(vehicle,"Totalschaden",0)
				setElementData(vehicle,"Enginestate",false)
				setVehicleLocked(vehicle,true)
				addEventHandler("onVehicleEnter",vehicle,function(element)
					if getElementData(source,"Enginestate") == false then
						setVehicleEngineState(source,false)
					else
						setVehicleEngineState(source,true)
					end
				end)
				addEventHandler("onVehicleExplode",vehicle,function()
					local sql = dbQuery(handler,"SELECT * FROM `vehicles` WHERE Slot = ? AND Besitzer = ?",getElementData(source,"Slot"),getElementData(source,"Besitzer"))
					local result, row = dbPoll(sql,-1)
					if row ~= 0 then
						local x,y,z = getElementPosition(source) 
						local rx,ry,rz = getElementRotation(source)
						dbExec(handler,"UPDATE `vehicles` SET Totalschaden = ?, SpawnX = ?, SpawnY = ?, SpawnZ = ?, RotX = ?, RotY = ?, RotZ = ? WHERE Besitzer = ? AND Slot = ?","1",x,y,z,rx,ry,rz,getElementData(source,"Besitzer"),getElementData(source,"Slot"))
						setElementData(source,"Totalschaden",1)
						setElementData(source,"SpawnX",x)
						setElementData(source,"SpawnY",y)
						setElementData(source,"SpawnZ",z)
						setElementData(source,"RotX",rx)
						setElementData(source,"RotY",ry)
						setElementData(source,"RotZ",rz)
						local besitzer = getPlayerFromName(getElementData(source,"Besitzer"))
						if besitzer then
							outputChatBox("Dein Fahrzeug in Slot "..getElementData(source,"Slot").." ist explodiert!",besitzer,255,0,0)
							outputChatBox("Solange du eine Vollkaskoversicherung besitzt kannst du dieses Auto zurückerstatten. Rufe hierfür deine Versicherung an!",besitzer,255,0,0)
						end
					end
				end)
				break
			end
		end
	else
		outputDebugString("Ein Fehler beim Erstellen eines Fahrzeugs!")
	end
end