I am getting Errors when building for web/steamed or not, while I can successfully build standalone PC/Mac versions fine. is there a different requirement/Limitation for web?
The issue normally appears after a scene/project has been worked on for a while , I find exporting the scene content as packages and import back to a brand new project sometimes fix the problem, but there are cases it just wont build for web, even just with some mesh and textures (both not very light - is this the problem?)
Ok, This time , I am answering my own question , if that's not against rule.
the problem has been solved by exporting every dependencies out as unitypackage and import them back into a brand new project, also best to be a local project rather than on a network drive, this way the project published to web just fine.