All functions except cv.imread() and cv.imshow() throw exception like " Exception catching is disabled, this exception cannot be caught. Compile with -s DISABLE_EXCEPTION_CATCHING=0 or DISABLE_EXCEPTION_CATCHING=2 to catch. "

[si-yuan-zhou]

When I load the page correctly, it will show

1. wasm streaming compile failed: TypeError: Response has unsupported MIME type
   opencv.js:24:19910 falling back to ArrayBuffer instantiation
2. IndexSizeError: Index or size is negative or greater than the allowed amount
   and when it run at cv.addWeighted(src1,alpha,src2,beta,0.0,-1),
3. uncaught exception: 6411184 - Exception catching is disabled, this exception cannot be caught. Compile with -s DISABLE_EXCEPTION_CATCHING=0 or DISABLE_EXCEPTION_CATCHING=2 to catch.