java - LibGDX Uncaught RunTime Exception in HTML Deployment -

java - LibGDX Uncaught RunTime Exception in HTML Deployment -

i seem getting error when deploying game html. menu screen works fine, transition game screen causes error.

text console:

uncaught java.lang.runtimeexception: com.google.gwt.core.client.javascriptexception: (typeerror) gwt$exception: <skipped>: cannot read property 'get_5' of null

the errors seem pile on millisecond window kept open. game runs on desktop (windows , mac), android, , iphone. not sure what's going on. i'm using 6 different sounds, multiple textures/textureatlas's, no fonts. extension have project "tools" extension.

i fixed previous error received after compiling html using reflection class. not sure error though.

this problem similar this thread year ago. took @ build.gradle file in html folder, "strict = true" within compiler struct, i'm assuming that's okay. project uses gl20 i'm not sure if solutions applicable in case.

thanks help!

java html html5 gwt libgdx