Error when trying to run webGL application in firefox or chrome

Hello guys, I get this error when I try to launch the index.html file through firefox. I do not understand to anything it says. "BB_WEB" is the name of my folder. Does anyone know where the problem is?

 An error occurred running the Unity content on this page. See your browser's JavaScript console for more info. The error was: uncaught exception: abort(161) at jsStackTrace (BB_WEB.js:1:19540) stackTrace (BB_WEB.js:1:19711) abort (BB_WEB.js:3:31950) ljp (blob:28:1) _Jk (blob:4:1) IQg (blob:13:1) PWg (blob:13:1) T4k (blob:4:1) G9o (blob:28:1) invoke_iiii (BB_WEB.js:1:350286) mio (blob:19:1) slo (blob:19:1) F9 (blob:7:1) Zua (blob:14:1) pRb (blob:12:1) iRb (blob:12:1) wpb (blob:10:1) RQb (blob:12:1) Laa (blob:7:1) zya (blob:14:1) Jva (blob:14:1) Lva (blob:14:1) Dva (blob:14:1) fua (blob:14:1) eua (blob:14:1) cua (blob:14:1) $ta (blob:14:1) Jia (blob:14:1)

Here is a messagefrom the console:

 Decompressed Release/BB_WEB.datagz in 781ms. You can remove this delay if you configure your web server to host files using gz compression.  UnityLoader.js:1
 Initialize engine version: 5.5.1f1 (88d00a7498cd)
 Creating WebGL 2.0 context.  UnityLoader.js:2
 Renderer: Mozilla
 Vendor:   Mozilla
 Version:  OpenGL ES 3.0 (WebGL 2.0)
 GLES:     3
  EXT_color_buffer_float GL_EXT_color_buffer_float EXT_texture_filter_anisotropic GL_EXT_texture_filter_anisotropic EXT_disjoint_timer_query GL_EXT_disjoint_timer_query OES_texture_float_linear GL_OES_texture_float_linear WEBGL_compressed_texture_s3tc GL_WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info GL_WEBGL_debug_renderer_info WEBGL_lose_context GL_WEBGL_lose_context MOZ_WEBGL_lose_context GL_MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc GL_MOZ_WEBGL_compressed_texture_s3tc
 OPENGL LOG: Creating OpenGL ES 3.0 graphics device ; Context level  <OpenGL ES 3.0> ; Context handle 1
 UnloadTime: 1.690000 ms
 ArgumentNullException: Argument cannot be null.
 Parameter name: url
  
 (Filename: currently not available on il2cpp Line: -1)