Got error my first time!

Development Platform & Builds
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1

Hello,
i have 2 issues

  1. when i play my game on browser i get below error after few minutes :
    Uncaught Error at Array. (blob:http://www.momentsnews.com/a792b25f-cfa4-40b2-93e3-e730d3497ac7:1:38841) at _emscripten_asm_const_v (blob:http://www.momentsnews.com/a792b25f-cfa4-40b2-93e3-e730d3497ac7:1:43523) at __ZN22FOutputDeviceAnsiError9SerializeEPKwN13ELogVerbosity4TypeERK5FName (wasm-function[177976]:250) at __ZN13FOutputDevice8LogfImplEPKwz (wasm-function[178718]:221) at _ZN13FOutputDevice4LogfIA64_wJiiiiEEEvRKT_DpT0 (wasm-function[21349]:64) at __ZN6FDebug12AssertFailedEPKcS1_iPKwz (wasm-function[177433]:180) at __ZN25TSlateElementVertexBufferI12FSlateVertexE13PreFillBufferEib (wasm-function[94020]:132) at __ZN24FSlateRHIRenderingPolicy27UpdateVertexAndIndexBuffersER24FRHICommandListImmediateR15FSlateBatchDataR25TSlateElementVertexBufferI12FSlateVertexER24FSlateElementIndexBuffer (wasm-function[94019]:467) at __ZN24FSlateRHIRenderingPolicy27UpdateVertexAndIndexBuffersER24FRHICommandListImmediateR15FSlateBatchData (wasm-function[93748]:17) at __ZN17FSlateRHIRenderer23DrawWindow_RenderThreadER24FRHICommandListImmediateRNS_13FViewportInfoER23FSlateWindowElementListbb (wasm-function[94365]:3204)

  2. how to enable message below :

Running with IndexedDB access disabled.

thanks

2

here is my link by the way