October 9, 2020
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Let’s learn how to make a game. Sometimes while making a game you will run across a NullReferenceException Error. In this programming tutorial, we will be showing you some common ways to fix a NullReferenceException Error. NullReferenceException occurs when you are Reference a GameObject that doesn’t exist in your hierarchy or game scene. The script is essentially trying to access/ reference something that doesn’t exist so the console window will return the error. Don’t fret after watching this video you should know how to find and fix the NullReferenceException Error

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17 COMMENTS

  1. reinaldo rodriguez Posted on June 20, 2020 at 12:08 am

    trying to ask if an Object is enabled on Script not sure, I gave the Object to a public Variable in the inspector not sure how to code? in an If statement

    Reply
  2. Owen Cavanagh Posted on June 20, 2020 at 12:08 am

    thankyou so much

    Reply
  3. kersean Posted on June 20, 2020 at 12:08 am

    Thanks much still very helpful today.

    Reply
  4. Denin Paul Posted on June 20, 2020 at 12:08 am

    thanks a lott mahn….

    Reply
  5. Oliwia Pstrągowska Posted on June 20, 2020 at 12:08 am

    can you help me to fix the nullreferenceException error on sugar rush speedway please?

    Reply
  6. Oliwia Pstrągowska Posted on June 20, 2020 at 12:08 am

    how did he do it?

    Reply
  7. Joe Guch Posted on June 20, 2020 at 12:08 am

    Thanks for covering this! Very helpful and informative.

    Reply
  8. Ayoub Mounchid Posted on June 20, 2020 at 12:08 am

    Hi, I am Ayoub new to C# and unity at the start, plus I am doing this out of my interest, so my question could be basic. However it has bugged me for so long, that I couldn't get it over even after I research it over the internet.
    Please help me. thanks.
    Link for the forum to solve the problem:https://social.msdn.microsoft.com/Forums/vstudio/en-US/3db39e76-319d-4e92-8f50-852311f24b81/nullreferenceexception-object-reference-not-set-to-an-instance-of-an-object-unity?forum=csharpgeneral

    Reply
  9. Avana Posted on June 20, 2020 at 12:08 am

    This is the dumbest error ever, there's practically no explanation to what is causing it, and if you're a beginner at C#, good fucking luck debugging it. So stupid.

    Reply
  10. CREAMYBUTTER xx Posted on June 20, 2020 at 12:08 am

    thx a lot!! it works!!

    Reply
  11. Mr Koroka Posted on June 20, 2020 at 12:08 am

    Hi!,

    If I use my dialogue script everything runs smoothly and works perfect. However…
    If I use a different script which allows the player to make an exercise my dialogue crashes.

    So my dialogue works, my choiceScript works but after using my choice script my dialogue crashes. The only thing these scripts have in common are that they are on the same Canvas. I need help.

    My code where it crashes is on the displaynextscentence so I copied the important code and you can see it below.

    void Start()
    {
    sentences = new Queue<string>();
    }

    public void DisplayNextSentence()
    {

    if (sentences.Count != 0) // ERROR IS HERE
    {

    PlayerController.dialogue1 = true; // doesn't alow the player to move anymore when dialogue active
    camMouseLook.dialogue1 = true; // doesn't allow the player to look around anymore and get their cursor when
    //dialogue active
    }

    if (sentences.Count == 0)
    {
    EndDialogue(); // ends dialogue
    PlayerController.dialogue1 = false; // allows player to move after dialogue closes
    camMouseLook.dialogue1 = false; // alows player to look around after dialogue closes
    return;
    }

    string sentence = sentences.Dequeue();
    StopAllCoroutines();
    StartCoroutine(TypeSentence(sentence));
    }

    To recap, this code works, until I use my choice script. There are no refferences to this script at all in that script.

    EDDIT: I also noticed that if I press space (in dialogueManager that triggers displayNextSentence) that in my choicescript it displays as if you have made the first choice. There is however, in the whole choicescript or any scripts that it refferences, NOTHING done with the space key. I just don't know anymore….

    pls send help.

    Reply
  12. kamel abbad Posted on June 20, 2020 at 12:08 am

    thanx u thanx u tahnx u tahnx u i cant imagine what i have to di whitout this video just u save my life

    Reply
  13. Manish Karki Posted on June 20, 2020 at 12:08 am

    I want to kill myself because of this error….i'm a noob in both unity and C#.

    Reply
  14. Dan Fisak Posted on June 20, 2020 at 12:08 am

    What happens if you close the program? :/

    Reply
  15. True Posted on June 20, 2020 at 12:08 am

    nice job guys 🙂 keep it up.

    Reply
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