Black screen in HTML5 Exported

I'm working on a project, but now when uploading HTML5 files exported to my website, only black screen is shown. It didn't happen before.

When opening the browser web console, the following errors are shown:

WebGL warning: linkProgram: Must have a compiled vertex shader attached.

Uncaught (in promise) Error: Error compiling vertex shader: ERROR: 0:6: 'vec3aPos' : Expected invariant

ERROR: 0:7: 'aTex' : syntax error

But I think it's weird because in 'Remote preview' it works well.

Can anyone help with that?

I'm working on a project, but now when uploading HTML5 files exported to my website, only black screen is shown. It didn't happen before.

When opening the browser web console, the following errors are shown:

WebGL warning: linkProgram: Must have a compiled vertex shader attached.

Uncaught (in promise) Error: Error compiling vertex shader: ERROR: 0:6: 'vec3aPos' : Expected invariant

ERROR: 0:7: 'aTex' : syntax error

But I think it's weird because in 'Remote preview' it works well.

Can anyone help with that?

ps: I'm using Construct 3

I just tried a HTML5 export and it worked fine.

It's hard to help without more information - at least a link to where you've uploaded it, or the project file.