Question How can I resolve this error? TypeError: Module.asm.$a is undefined

***SOLVED***
The webGL app I have deployed is not working and I can not figure out what is wrong. I updated the editor, I changed some settings according to a few videos I found but they were aimed at deployment on itch.io. This is really frustrating me. I have deployed a webGL app in the past and did not have any issues. Any help would be greatly appreciated.

This is the error code thrown by Firefox:

Code (JavaScript):

1. TypeError: Module.asm.$a is undefined
2. unityFramework/Module.dynCall_viiiii@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:324120
3. invoke_viiiii@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:380304
4. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[2589]:0x11b1c7
5. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[2589]:0x11aedc
6. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[26630]:0x1085431
7. invoke_iii@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:376825
8. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[1139]:0x80fba
9. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[26628]:0x108541b
10. invoke_vi@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:377940
11. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[54318]:0x16d56aa
12. @blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7 line 10 > WebAssembly.instantiate:wasm-function[54316]:0x16ca949
13. unityFramework/Module._main@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:320746
14. callMain@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:390526
15. doRun@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:390968
16. run@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:391132
17. runCaller@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:390172
18. removeRunDependency@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:15466
19. unityFramework/</unityFileSystemInit</<@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:1913
20. doCallback@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:116718
21. done@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:116882
22. unityFramework/reconcile/transaction.oncomplete@blob:https://pbnggames.com/ff6fb507-3f9d-4d0d-889e-fb82539d35e7:10:110532

I can't find a way to copy and paste the error message thrown by Chrome. You can come to see the app yourself at
https://pbnggames.com/friendZap/index.html

 

I assume Build&Run locally works fine?
Try deploying to Unity Play via the WebGL Publisher asset from the store. Or to itch.io. If that works, at least you know it‘s an issue with the webserver.
Play with the build settings like compression. Be sure to deploy a debug build for testing.

 

Thank you for pointing me in the correct direction. The issue was that the server was not configured for web assembly files (/wasm) and this was resolved by adding a htaccess file to the game directory as described in the Unity manual here.