Html5 package and launch failed

when I create a project based on C++,and create a class of floatingActor ,which is like this https://docs-origin.unrealengine.com/latest/INT/Programming/QuickStart/2/index.html ,and this work well in UE Editor,and I build successfully with html5 solution platform ,but when I launch the game on firfox,there are some errors:

when I packaged and run

It looks like the root problem is “malformed Unicode character escape sequence”, which I think might come from some Japanese characters in an unexpected place. Can you upload the project and the build somewhere?

Also, try doing a DebugGame build:

That can have more information about the error, and the call stack in particular (it will be much slower though, so have patience when loading)

Firstly thanks for your answer.I try doing a DebugGame build,but the result is Like the original

Can you zip up the build and the project somewhere?

could you try download from here?

I dowlaod emscripten form here and installed,but the latest help document of UnReal said " In versions 4.9 and later, emscripten and python are included in the engine distribution. You can find them in Engine/Source/ThirdParty/HTML5/emsdk/, but no configuration or additional installation is required to deploy to HTML5. " but when I Uninstall the emscripten ,it still does not work well.

Hey 赵静萍,

On UE4 versions 4.9 and above, you do not need to install emscripten yourself. Please upload your error output logs as a .txt document and provide a link to download your project, as the link provided does not work.

Thanks!

Hey,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will offer further assistance.

Thank you!