# Unity HTML 54 build error using FMOD 2.00.09

**URL:** <https://qa.fmod.com/t/unity-html-54-build-error-using-fmod-2-00-09/15891>\
**Category:** Unity\
**Tags:** html5, unity, csharp\
**Created:** [June 17, 2020, 12:59am UTC](https://qa.fmod.com/t/unity-html-54-build-error-using-fmod-2-00-09/15891 "2020-06-17T00:59:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RaphaelHuot](https://avatars.discourse-cdn.com/v4/letter/r/4af34b/32.png) [@RaphaelHuot](https://qa.fmod.com/u/RaphaelHuot)\
**Post date:** [June 17, 2020, 12:59am UTC](https://qa.fmod.com/t/unity-html-54-build-error-using-fmod-2-00-09/15891/1 "2020-06-17T00:59:30Z")

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Hey there!

My client needs WebGL export for a simple program. I’m using Unity 2019.2.21f1 Personal with FMOD 2.00.09 (Unity Verified).

I get this error in the console in my development build and there’s no sound:

![Capture](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/9/9d3a19f1290c26f242f00d8d861ef2a920966501.png)

Everything works fine in the editor. “Master” is the name of the only bank we’re using. I don’t understand why it’s ‘key’ is being added multiple times. I am only loading the script through one instance of the Studio Bank Loader script attached to an object in my scene:

![Capture2](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/0/08acda838fbb05b7925d2c2ac0faf08df720f876.png)

As for the second error, I simply can’t understand a thing.

Any help with this would be greatly appreciated! Cheers 🙂

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**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [June 24, 2020, 5:23am UTC](https://qa.fmod.com/t/unity-html-54-build-error-using-fmod-2-00-09/15891/2 "2020-06-24T05:23:41Z")

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Are you able to share the entire output log?