Dictionary.Add error

Hello. When i try run compilled WebGL application in google chrome, i have this error:

Exception at:
Error
    at jsStackTrace (blob:file:///ddd82398-c73c-483d-a277-5a4c7bcf83ce:1586:13)
    at stackTrace (blob:file:///ddd82398-c73c-483d-a277-5a4c7bcf83ce:1603:12)
    at blob:file:///ddd82398-c73c-483d-a277-5a4c7bcf83ce:484:40
    at __ZN6il2cpp2vm9Exception5RaiseEP15Il2CppException [il2cpp::vm::Exception::Raise(Il2CppException*)] (<WASM>[52789]+141)
    at __Z30il2cpp_codegen_raise_exceptionP21Exception_t1927440687 [il2cpp_codegen_raise_exception(Exception_t1927440687*)] (<WASM>[20526]+3)
    at _Dictionary_2_Add_m2095870652_gshared (<WASM>[25598]+73)
    at _IUMobileApp_InitLocalization_m2858019931 (<WASM>[21311]+576)
    at _IUMobileApp_Init_m1415827206 (<WASM>[21310]+446)
    at _LoginCanvas_Start_m2744980832 (<WASM>[21369]+84)

Does it work when you have an asm.js only build?

when WebAssembly build and without WebAssembly

Is that the full exception you get when you build with full exception support?
Does it happen in other browsers too?

Can you make it a bug report as described under Unity QA: Building quality with passion and ping the case number here?