The browser crash and Render process gone

First：Compile the C code into the WASM library，the compile script as
`emcc decoder1.a decoder2.a -o Decoder.js -s USE_PTHREADS=1 -s TOTAL_MEMORY=1GB -s ALLOW_MEMORY_GROWTH=0 -s MAX_WEBGL_VERSION=2 -s FULL_ES2=1 -s OFFSCREENCANVAS_SUPPORT=1 -s PTHREAD_POOL_SIZE=2`

And in test.html ，Loaded the Decoder. Js library：
``

But if refresh Chrome multiple times and the browser will crash：
`SBOC_FATAL_MEMORY_EXCEEDED`
console：`Debugging connection was closed. Reason:Render process gone.Reconnect when ready by reopening DevTools.`

could you tell me why ?