nullreference in build | Official Unity Discord | Page 1

storm ledge Apr 16, 2023, 7:21 AM

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i am having an issue with nullreferences in the build and not the editor

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what is happening is that none of my scripts seem to be able to access anything outside

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their own gameobject

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player2
UnityEngine.StackTraceUtility:ExtractStackTrace ()
UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
UnityEngine.Logger:Log (UnityEngine.LogType,object)
UnityEngine.Debug:Log (object)
generalmovementscript:Start () (at C:/Users/Admin/New Unity Project (2)/Assets/scripts/generalmovementscript.cs:63)

(Filename: C:/Users/Admin/New Unity Project (2)/Assets/scripts/generalmovementscript.cs Line: 63)

NullReferenceException: Object reference not set to an instance of an object
at generalmovementscript.Start () [0x001bc] in C:\Users\Admin\New Unity Project (2)\Assets\scripts\generalmovementscript.cs:104

(Filename: C:/Users/Admin/New Unity Project (2)/Assets/scripts/generalmovementscript.cs Line: 104)

Null
UnityEngine.StackTraceUtility:ExtractStackTrace ()
UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
UnityEngine.Logger:Log (UnityEngine.LogType,object)
UnityEngine.Debug:Log (object)

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is a part of the erro log

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wanton patio Apr 16, 2023, 7:23 AM

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Use code sharing guidelines for errors and code
!code

somber jewelBOT Apr 16, 2023, 7:23 AM

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Posting code

📃 Large Code Blocks
Large code blocks should be posted as links to services like:
https://gdl.space/, https://paste.ofcode.org/, https://hatebin.com/
https://paste.myst.rs/, https://hastebin.com/

📃 Inline Code
Surround code with three backquotes. Not quotation marks.
To get C# formatting the first line should only contain cs or csharp.
Add a comment with a line number if there is an error message.
```cs
// Your code here
```
Do not share screenshots of code unless requested.

wanton patio Apr 16, 2023, 7:24 AM

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And we don't need all the errors right away. Pick and share one.

storm ledge Apr 16, 2023, 7:24 AM

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this is a really small part of all the errors

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i just wanted to show the two debug log reulsts

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    {
        Debug.Log(gameObject.tag);

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hold on

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where can i find backquotes

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this is line 61 62 and 63 of generalmovementsscript

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        Debug.Log(p1);

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player1
UnityEngine.StackTraceUtility:ExtractStackTrace ()
UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
UnityEngine.Logger:Log (UnityEngine.LogType,object)
UnityEngine.Debug:Log (object)
generalmovementscript:Start () (at C:/Users/Admin/New Unity Project (2)/Assets/scripts/generalmovementscript.cs:63) oh i forgot that i needed this

wanton patio Apr 16, 2023, 7:28 AM

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Take a screenshot of the error and share the whole generalmovementsscript. Upload it to a paste site.

storm ledge Apr 16, 2023, 7:29 AM

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https://gdl.space/zukuqepoge.cs

wanton patio Apr 16, 2023, 7:30 AM

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Line 63..?
CurrentMove4 = jam;

storm ledge Apr 16, 2023, 7:31 AM

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oh wait

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uhh

wanton patio Apr 16, 2023, 7:31 AM

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It feels like your code changes did not compile. The game runs an older code while you keep on making changes that don't apply

storm ledge Apr 16, 2023, 7:33 AM

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oh i saw the problem

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i missed a few lines at the top when positng to that site

night rain Apr 16, 2023, 7:34 AM

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wanton patio It feels like your code changes did not compile. The game runs an older code whi...

wait please tell me you rebuilt it

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after

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you changed the code

storm ledge Apr 16, 2023, 7:34 AM

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https://gdl.space/iziwirucad.cs

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this should be the correct code

storm ledge Apr 16, 2023, 7:35 AM

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storm ledge ```public void Start() { Debug.Log(gameObject.tag); ```

this is line 61 62 and 63 btw

storm ledge Apr 16, 2023, 7:35 AM

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storm ledge ```p1 = GameObject.FindWithTag("player1").GetComponent<generalmovementscript>();...

this is line 37 and 38 of roundstart lemme post that

night rain Apr 16, 2023, 7:36 AM

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night rain wait please tell me you rebuilt it

@storm ledge

storm ledge Apr 16, 2023, 7:36 AM

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https://gdl.space/delatigusi.cpp

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oh yes i did rebuild it after i changed the code

night rain Apr 16, 2023, 7:37 AM

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ok

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dlich might need to carry i cant put off studying any longer sryy

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been procrastinating too hard 😦

wanton patio Apr 16, 2023, 7:40 AM

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storm ledge https://gdl.space/iziwirucad.cs

There's no way this line could throw an error:

Debug.Log(gameObject.tag);

storm ledge Apr 16, 2023, 7:40 AM

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yeah it didnt

wanton patio Apr 16, 2023, 7:40 AM

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??

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Was that a stack trace of a log message?

storm ledge Apr 16, 2023, 7:40 AM

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storm ledge player1 UnityEngine.StackTraceUtility:ExtractStackTrace () UnityEngine.DebugLogH...

it returns player1

wanton patio Apr 16, 2023, 7:41 AM

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Please take a screenshot of one of the errors in the console...

storm ledge Apr 16, 2023, 7:41 AM

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there are both errors and normal logs in that text

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the null is from line38

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and an error occurs when i try to pull something from it in line49

wanton patio Apr 16, 2023, 7:44 AM

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p1 = GameObject.FindWithTag("player1").GetComponent<generalmovementscript>();
Debug.Log(p1);

storm ledge Apr 16, 2023, 7:44 AM

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yep that one

wanton patio Apr 16, 2023, 7:45 AM

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Try separating that line into 2. One that finds the object with the tag and the other one getting the component. Then debug the name of the found gameobject.

storm ledge Apr 16, 2023, 7:49 AM

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oh wow i think i just found the issue

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it returns a descendant of the object i wanted apparently

wanton patio Apr 16, 2023, 7:50 AM

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Yep. It probably has the tag

storm ledge Apr 16, 2023, 7:52 AM

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one question though

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why does it return the parent in the editor but the child in the build

wanton patio Apr 16, 2023, 7:58 AM

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storm ledge why does it return the parent in the editor but the child in the build

If 2 objects have the same tag, there's no guarantee what object would be found first. It might be deterministic on one machine, but not deterministic between different machines and platforms. That's why it's not considered a great practice to use the Find method.

#nullreference in build