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Uncaught ReferenceError: createUnityInstance is not defined

Discussion in 'WebGL' started by radiantboy, Dec 6, 2021.

  1. radiantboy

    radiantboy

    Joined:
    Nov 21, 2012
    Posts:
    1,593
    Getting this when I try to run my webgl game from my webspace, works fine if I do build & run, any ideas?

    Uncaught ReferenceError: createUnityInstance is not defined
    at HTMLScriptElement.script.onload ((index):108:9)

    Unity 2021.2.4f1
     
    radiantboy, Dec 6, 2021
    #1

  2. MarcelPursche

    MarcelPursche

    Unity Technologies

    Joined:
    Mar 3, 2021
    Posts:
    44
    Hi,
    are there any other errors in the browser console? Maybe, the .loader.js or .framework.js is not loaded properly.
     
    MarcelPursche, Dec 6, 2021
    #2

  3. ROBYER1

    ROBYER1

    Joined:
    Oct 9, 2015
    Posts:
    1,444
    Same issue here, just
    Code (CSharp):
    1. Uncaught ReferenceError: createUnityInstance is not defined
     
    ROBYER1, Dec 9, 2021
    #3

  4. MarcelPursche

    MarcelPursche

    Unity Technologies

    Joined:
    Mar 3, 2021
    Posts:
    44
    It is very likely that the .loader.js is not loaded then. Is there another error that says something like: "Error: .loader.js could not found" or a similar error. Maybe in the Chrome Developer Tools/Network Tab? Can you tell me what your configuration for the web server looks like and what files are in your build output?
     
    MarcelPursche, Dec 9, 2021
    #4
    kalibcrone likes this.

  5. radiantboy

    radiantboy

    Joined:
    Nov 21, 2012
    Posts:
    1,593
    I stopped getting this somehow, I think when i turned on compression or something it went away, could also be down to the .htaccess file i tinkered with that, got webgl build running good with no errors and not even that one about it "could be faster" :)
     
    radiantboy, Dec 10, 2021
    #5

  6. larryhems

    larryhems

    Joined:
    Jun 20, 2022
    Posts:
    2
    If you are using any script file and getting "Uncaught ReferenceError: 'createUnityInstance' is not defined " which means ‘createUnityInstance’ is either a variable or a method which you are trying to use before declaring it using var keyword. This means that there is a non-existent variable referenced somewhere. This variable needs to be declared, or you need to make sure it is available in your current script or scope otherwise , it will endup throwing this ‘createUnityInstance’ is not defined error . This usually indicates that your library is not loaded and JavaScript does not recognize the ‘createUnityInstance’.

    To solve this error: Load the jQuery CDN library at the beginning of all your javascript files/scripts which uses $/ jQuery, so that $/jQuery can be identified in scripts .

    There can be multiple other reasons for this issue:
    • Conflict with Other Libraries
    • Path to your library included is not correct
    • Llibrary file is corrupted
    • Working offline (when you use CDN)
     
    larryhems, Jun 20, 2022
    #6