so when i try to buy something in shop it's just drop me this error.How to fix this?
Code:
RegisterServerEvent('esx_shops:buyItem')
AddEventHandler('esx_shops:buyItem', function(itemName, amount, zone)
local _source = source
local xPlayer = ESX.GetPlayerFromId(_source)
local sourceItem = xPlayer.getInventoryItem(itemName)
amount = ESX.Round(amount)
-- is the player trying to exploit?
if amount < 0 then
print('esx_shops: ' .. xPlayer.identifier .. ' attempted to exploit the shop!')
return
end
Error:
SCRIPT ERROR: #esx_supermarket/server/main.lua:68: attempt to index a nil value (local 'xPlayer')
xPlayer is a nil value. nil values may not be indexed. Doing so causes an error.
So anything like xPlayer[something], xPlayer.something or xPlayer:something() is not allowed.
In your first example
local xPlayer = ESX.GetPlayerFromId(_source)
local sourceItem = xPlayer.getInventoryItem(itemName)
xPlayer is nil because ESX.GetPlayerFromId(_source) did not return a player. Most likely because _source is nil. At least there is nothing in your code that would indicate that source is not nil.
Befor you try to index possible nil values, check wether they are nil.
Please read the Lua manual and do a beginners tutorial.
Related
Hello i am trying to get the position of the HumanoidRootPart but it says attempt to index nil with 'Character' also the FollowPlrbox has the players name.(This not a local script)
Script:
script.Parent.MouseButton1Click:Connect(function()
local fwbox = script.Parent.Parent.FollowPlrbox.Text
local player = game.Workspace:FindFirstChild(fwbox)
local plrpart = player.Character:FindFirstChild("HumanoidRootPart")
local plrposx = plrpart.Position.X
print(plrposx)
end)
Error:
attempt to index nil with 'Character'
Your error is telling you that player doesn't exist. This could mean that whatever you have typed for the player's name is misspelled, incorrect capitalization, or there's simply no player with that name.
Anyways, you need to account for the fact that the player might not exist before trying to access properties on it. Also, since you are searching the Workspace, you are not looking for a Player, you are looking for that player's character model.
So to fix your issue, you simply need to add safety checks.
script.Parent.MouseButton1Click:Connect(function()
local fwbox = script.Parent.Parent.FollowPlrbox.Text
local character = game.Workspace:FindFirstChild(fwbox)
if character then
local rootPart = character:FindFirstChild("HumanoidRootPart")
if rootPart then
local rootPartPosX = rootPart.Position
print(rootPartPosX)
end
end
end)
The reason we add if character then and if rootPart then is because it's possible that the FindFirstChild() function won't find anything. So we say, only do the rest of this code if character exists.
So I got this error and I cant seem to fix it.
Can anyone tell me how to fix it?
The error was : Attempt to concatenate string with Instance.
Image of the full error
The function:
function chatfunc(msg) -- < error line 523
coroutine.wrap(function()
local amountsofchats = 0
for i,v in pairs(workspace:GetChildren()) do
if v.Name == "amogus"..plr then
amountsofchats += 1
end
end
if amountsofchats >= 5 then
return
end
for i,v in pairs(workspace:GetChildren()) do
if v.Name == "amogus"..plr then
v.StudsOffset += Vector3.new(0,2,0)
end
end
...
The second error thing:
game:GetService("Players")[Username].Chatted:Connect(function(msg)
local msg,Message_ = msg,msg
if string.sub(msg,1,3) == "/e " then
msg = string.sub(msg,4)
end
chatfunc(msg) -- < error line 717
end)
You are getting this error because are you trying to concat a string with an instance for example "string" .. Instance.new("Part").
Now since you didnt give any lines numbers with your code, I am assuming "amogus"..plr is what causes the error, since plr is here an instance you probably ment to do "amogus"..plr.Name which is concatting two strings
Also
i do not recommend doing this at all game:GetService("Players")[Username] if the user has name which is a property of Players service u will get the property instead of the player. for example if you have the username MaxPlayers that will return a number and not the player with that name thus your code will error. So I recommend doing game:GetService("Players"):FindFirstChild(Username)
so im gettin this error so i know theres something i probably gotta fix here but i have no idea how .thanks
SCRIPT ERROR: #gcphone/server/server.lua:205: attempt to index a nil value (local 'items')
CODE FROM LINE 205
ESX.RegisterServerCallback('crew-phone:phone-check', function(source, cb)
local xPlayer = ESX.GetPlayerFromId(source)
if not xPlayer then return; end
for k, v in pairs(Config.Phones) do
local items = xPlayer.getInventoryItem(v)
if items.count > 0 then
cb(v)
return
end
end
cb(nil)
end)
ESX.RegisterServerCallback('crew-phone:item-check', function(source, cb, data)
local xPlayer = ESX.GetPlayerFromId(source)
if not xPlayer then return; end
local items = xPlayer.getInventoryItem(data)
cb(items.count)
end)
This error tells you that items is a nil value and Lua complains about it because you try to index it as in items.count. That doesn't make sense if items is nil
It's like referring to a book page of a non-existant book.
local items is nil because xPlayer.getInventoryItem(data) returned nil
Check wether the local script provides a string for data when triggering the server event and if xPlayer actually has an item like that.
Also check your RegisterServerCallback. The function you define there is the callback. Why is there another callback in that function argument? I think you're confusing things and probably should refer to the manual again.
https://esx-framework.github.io/es_extended/server/functions/registerservercallback/
I have a lua script with code block as below:
local call_data = cjson.decode(ARGV[1])
local other_data = cjson.decode(ARGV[2])
local data = {}
local next = next
local populate_data = function(source)
if next(source) == nil then
return
end
for property,value in pairs(source) do
redis.call('HSET', KEYS[2], property, value)
end
end
populate_data(call_data)
populate_data(other_data)
When I try to run the script with the following command KEYS and ARGV as:-
redis-cli --eval dialed.lua "inflight_stats:18" "calls:AC443d7a8111a96ba8074f54a71f0521ce:CA1ec49703eee1959471c71506f43bb42e:dialed" , "{\"from\":\"+18035224181\",\"to\":\"+919943413333\",\"sid\":\"CA1ec49703eee1959471c71506f43bb42e\",\"status\":\"queued\",\"direction\":\"outbound-api\",\"date_created\":null,\"account_sid\":\"AC443d8a8111a96ba8074f54a71f0521ce\"}" "{\"phone\":\"919943413333\",\"campaign_id\":18,\"caller_session_sid\":\"CA828b163153bf5cc301ef5285e38925f9\"}" 0
Error :-
(error) ERR Error running script (call to f_08dcc69ee8baa0200e0cf552948ab4bc338c9978): #user_script:11: #user_script: 11: Lua redis() command arguments must be strings or integers
TL;DR for values returned by cjson.decode(), use cjson.null to compare to JSON's null value.
Explanation: Lua uses nil in tables to mark deleted entries. If JSONinc nulls were converted to Lunatic nils, the decoded objects would be corrupt. Therefore, the cjson lib uses a lightweight userdata type to represent null/nil.
Your 'call_data' has a 'date_created' field that is null - that causes the error.
The funny thing is that Redis, like Lua, will not store a nil/null value, so you'll have to either ignore null values or use a special value in Redis to flag them.
Assuming you'll be ignoring them, here's one way around it:
local call_data = cjson.decode(ARGV[1])
local other_data = cjson.decode(ARGV[2])
local data = {}
local next = next
local null = cjson.null
local populate_data = function(source)
if next(source) == nil then
return
end
for property,value in pairs(source) do
if value ~= null then
redis.call('HSET', KEYS[2], property, value)
end
end
end
populate_data(call_data)
populate_data(other_data)
Also, a small optimization would be to batch the updates, like so:
local payload = {}
for property,value in pairs(source) do
if value ~= null then
table.insert(payload, property)
table.insert(payload, value)
end
end
redis.call('HSET', KEYS[2], unpack(payload))
P.S. if you want, look at ReJSON that I wrote - it is designed to help with what it appears that you're trying to do.
i have been trying to fix this problem in my game:
"attempt to index field 'LocalPlayer' (a nil value)"
but nothing i tried to do worked
here is the code:
please do not mind the extremely un-efficient lines of code
local player = game.Players.LocalPlayer
script.Parent.Humanoid.Died:Connect(function()
print("yeet")
script.Parent.Parent.Parent.Players.LocalPlayer.leaderstats.PuzzlePieces.Value = script.Parent.Parent.Parent.Players.LocalPlayer.leaderstats.PuzzlePieces.Value + 1
end)
and this is the error message i get:
attempt to index field 'LocalPlayer' (a nil value)
LocalPlayer can only be used in localscripts, and if you are changing leaderstats, you would need to use remotefunctions if your using the localplayer way, or you could use a script and then detect is a player dies and give them a leaderstat value.
PS. If your into roblox I very well recommand https://scriptinghelpers.org/, it is a great roblox scripting Q&A.