Fixing Bugs in AI-Generated Code

Here's the console output when the bug occurs:

ServerScriptService.MainScript:45: attempt to call method 'FireAllClients' of nil
Stack Begin
Script 'ServerScriptService.MainScript', Line 45 - function handlePlayerJoined
Script 'ServerScriptService.MainScript', Line 12
Stack End

Fix this error and explain what's wrong.

Explain this error in simple English - what does 'attempt to call method
'FireAllClients' of nil' mean? Why is this happening and how does your fix
prevent it in the future?

ReplicatedStorage.RemoteEvents.PlayerDamage is not a valid member of ReplicatedStorage "ReplicatedStorage"
Stack Begin
ServerScriptService.CombatSystem:23: function dealDamage
ServerScriptService.CombatSystem:8: function onHit
Stack End

Here's the error from Roblox Studio console:

ReplicatedStorage.RemoteEvents.PlayerDamage is not a valid member of ReplicatedStorage "ReplicatedStorage"
Stack Begin
ServerScriptService.CombatSystem:23: function dealDamage
ServerScriptService.CombatSystem:8: function onHit
Stack End

Fix this and explain in plain English what this error means and why it happened.

Add debugging prints with unique prefixes so we can properly identify the issue.

Add debugging prints with "[TELEPORT]" prefix specifically for:
- When player touches the pad
- When destination is calculated
- Right before the CFrame changes

I need to see if the destination calculation is the problem.

local function onTeleportPadTouch(otherPart)
    print("[TELEPORT] Player detected:", otherPart.Parent.Name)
 
    local character = otherPart.Parent
    local humanoid = character:FindFirstChild("Humanoid")
 
    if humanoid then
        print("[TELEPORT] Character found:", character.Name, "at position:", character.HumanoidRootPart.Position)
 
        local destination = workspace.TeleportDestination
        print("[TELEPORT] Destination:", destination.Position)
 
        character.HumanoidRootPart.CFrame = destination.CFrame
        print("[TELEPORT] Success: Player teleported to", destination.Position)
    else
        print("[TELEPORT] ERROR: No humanoid found in", otherPart.Parent.Name)
    end
end

Here are the debug logs from the console with the unique prefixes I added:

[TELEPORT] Player detected: Player1
[TELEPORT] Character found: Player1 at position: 10, 5, 20
[TELEPORT] Destination: 50, 5, 100
[TELEPORT] ERROR: No humanoid found in Player1

The logs show the character is found but then says no humanoid found.
This doesn't make sense. Fix this logic error.

The issue is still not clear. Add much more detailed debugging prints that show:
- Every step inside the function
- All variable values at each step
- Every condition check and its result

Go deeper into the logic to find where it's failing.

The detailed logs aren't helping. Add higher-level debugging that shows:
- Which systems are calling this function
- What state the game is in when this runs
- What happened before this function was called

Give me broader context to understand the bigger picture.

The teleport is still failing but I don't know why. Add debugging prints inside
every if statement, every loop, and after every variable assignment in the
teleport function. I need to see the exact line where it breaks.

The error happens during teleport but I don't understand why it's being called
at the wrong time. Add higher-level logs showing what triggers the teleport
system and the game state before teleport is attempted.

Fix this error, then add debugging prints with unique prefixes that show:
- When each function is called
- What values are passed between functions
- State of important variables at each step
- Any error conditions

This will help me understand the code flow and quickly identify issues.

Fix this error in the teleport script: 'Workspace.TeleportPad.Script:12:
attempt to index nil with 'Character''. The error occurs when any player
steps on the teleport pad. Add proper nil checking and error handling.

The damage calculation is applying 50 damage instead of the intended 25.
The weapon stats show BaseDamage = 25, but players are taking double damage.
Check the damage formula and fix the multiplication error.

The particle system causes severe lag when more than 3 players use magic spells
simultaneously. The game drops from 60fps to 15fps. Optimize the particle
generation to handle 10+ concurrent users without performance loss.

The zombie spawning system creates objects that never get cleaned up.
After 10 minutes of gameplay, there are 500+ zombie parts in workspace
causing memory issues. Add proper cleanup when zombies are destroyed.

The new inventory system conflicts with the existing shop system.
When players purchase items, they appear in the shop inventory but
not in the main inventory. Make both systems share the same data source.

BUG FIX REQUEST:

Original feature: [Brief description of what was supposed to work]

Current problem: [Specific issue with exact error messages]

Expected behavior: [What should happen instead]

Context: [When/how the bug occurs]

Additional info: [Any relevant details about your game setup]

Please fix this issue and explain what was wrong.

BUG FIX REQUEST:

Original feature: Player respawn system that teleports dead players to
random spawn points after 5 seconds

Current problem: Players respawn immediately at (0,0,0) instead of spawn
points. No 5-second delay occurs. Error in output: 'ReplicatedStorage.SpawnData
is not a valid member of ReplicatedStorage'

Expected behavior: 5-second countdown, then teleport to one of 8 designated
spawn points randomly

Context: Happens every time any player dies from fall damage or combat

Additional info: Using FilteringEnabled, spawn points are in workspace
folder called 'SpawnPoints'

Please fix this issue and explain what was wrong.

This section of the generated code is causing the error:

local function teleportPlayer(player)
    local character = player.Character  -- This line fails
    character.HumanoidRootPart.CFrame = spawnPoint.CFrame
end

The error suggests 'player.Character' is nil. Fix this with proper validation.

Additional context for the bug fix:
- Game uses R15 character rigs
- Custom character controller is active
- Players can join mid-game
- Using team-based spawning system

Fix the nil reference error in line 12 of the teleport script.
Just make it work without crashing.

Now add validation to ensure the teleport destination exists
before attempting to teleport.

Add smooth teleport effects and sound feedback to the working
teleport system.

Test this fix by having multiple players use the teleport simultaneously.
If any new errors occur, report them with the exact error messages.

Fix this error, then explain:
1. Why did this specific error occur?
2. What does 'attempt to index nil' actually mean?
3. How can I recognize this pattern in future code?
4. What are the warning signs I should watch for?

Treat me like I'm learning Roblox scripting. Fix this error and explain
it step-by-step so I understand what went wrong and can avoid it next time.

Explain what 'nil' means in this context and why the object doesn't exist
when the script expects it to.

Explain why this script runs before the object is created and how to
properly wait for objects in Roblox.

Explain why this variable isn't accessible here and how Roblox script
scope works.

Add comprehensive error handling to this system:
- Try-catch blocks (pcall) for risky operations
- Graceful degradation when services fail
- User-friendly error messages instead of script errors
- Logging that helps trace problems
- Retry logic for temporary failures

Add performance timing measurements to identify bottlenecks:
- Time each major operation
- Log when operations exceed expected duration
- Add warnings for performance issues

The current implementation has fundamental issues that can't be patched:
1. [List major problems]
2. [Performance concerns]
3. [Security issues]

Please rewrite this system from scratch with these requirements:
- [Specific requirements]
- [Performance targets]
- [Security considerations]

Keep the same external interface but redesign the internal logic.

Create a robust teleport system that handles:
- Players leaving during teleport
- Invalid teleport destinations
- Network lag and disconnections
- Multiple simultaneous teleports

Also create a test script that verifies this system works correctly
under various conditions and edge cases.

FIX: [System name] - [Brief issue description]

Error: [Exact error message or unexpected behavior]

Expected: [What should happen]

When: [Specific conditions when bug occurs]

Fix needed: [Specific change requested]

FIX: Jump Pad System - Players not launching

Error: No upward velocity applied when stepping on pad,
no error messages in console

Expected: Players should launch 50 studs upward with trail effect

When: Happens with all players on all jump pads

Fix needed: Debug the velocity application and add visual feedback