hey! 👋 what’s up? how can I help today?

Gotcha—FiveM script trouble can be a pain. Here’s a quick, practical checklist plus a tiny working example you can drop in to isolate the issue. If it still breaks, paste your exact error from F8 or the server console and I’ll pinpoint it.

Quick checklist

1. Folder & start-up

   • Put your resource in resources/[local]/myresource.
   • In server.cfg: ensure myresource
   • In console: refresh then restart myresource

2. fxmanifest

   • Make sure you’re on a modern fx_version (needed for vector3, etc.).

3. Client vs server

   • TriggerServerEvent is client → server
   • TriggerClientEvent is server → client (usually TriggerClientEvent(name, src, ...))

4. Dependencies

   • Using ESX/QBCore/MySQL? They must start before your resource, or declare dependency in your manifest.

5. Infinite loops

   • Any while true do must include Wait(0) (or longer), or you’ll lock up.

6. Resource/export names

   • exports['qb-core']:GetCoreObject() (resource folder must be exactly qb-core)
   • “No such export” usually = wrong resource name, missing start, or export not declared.

Minimal working resource

Use this to confirm your environment is fine.

fxmanifest.lua

lua
fx_version 'cerulean'
game 'gta5'
lua54 'yes'

client_scripts {'client.lua'}
server_scripts {'server.lua'}

server.lua

lua
-- Simple server <-> client ping
RegisterNetEvent('hello:ping', function()
    local src = source
    TriggerClientEvent('hello:pong', src, ('server sees you: %s (resource %s)'):format(src, GetCurrentResourceName()))
end)

client.lua

lua
-- /ping in the chat will test the event roundtrip
RegisterCommand('ping', function()
    print('client: sending ping to server...')
    TriggerServerEvent('hello:ping')
end, false)

RegisterNetEvent('hello:pong', function(msg)
    print('client got:', msg)
end)

If that works, the issue is in your original script. If it doesn’t, the problem is setup/ordering.

Common errors → quick fixes

• attempt to index a nil value (global 'ESX')
  • Start es_extended before your resource, or add to manifest:

    lua
    dependency 'es_extended'

• attempt to index a nil value (global 'QBCore')
  • Ensure qb-core is started, then in your script:

    lua
    QBCore = exports['qb-core']:GetCoreObject()

• attempt to call a nil value (global 'MySQL') / DB issues
  • Using oxmysql:

    lua
    server_scripts {'@oxmysql/lib/MySQL.lua','server.lua'}
    dependency 'oxmysql'

• No such export
  • The exporting resource isn’t started, the name is wrong, or the export isn’t declared in its fxmanifest.
• vector3 nil / native missing
  • Update to fx_version 'cerulean' (as above).

If you can, paste the exact error lines (from F8 client console or server console) and the relevant snippet—I'll zero in on the fix.