wasm app cannot run correctly

qaymuic@qaymuic-HUAWEI-UbuntuBook-D:~/testProjects/qt-webassembly-examples/widgets_wiggly$ make

...

emcc: warning: cannot represent a NaN literal '0x157d9420' with custom bit pattern in NaN-canonicalizing JS engines (e.g. Firefox and Safari) without erasing bits!
in ret double 0x7FF4000000000000 in _ZL7qt_snanv.18438()

qaymuic@qaymuic-HUAWEI-UbuntuBook-D:~/testProjects/qt-webassembly-examples/widgets_wiggly$ emrun widgets_wiggly.html
Executing /usr/bin/xdg-open http://localhost:6931/widgets_wiggly.html
[25955:25955:0311/180046.880463:ERROR:sandbox_linux.cc(364)] InitializeSandbox() called with multiple threads in process gpu-process.

Chrome show:

Application exit (abort("this function has been removed - you should use UTF8ToString(ptr, maxBytesToRead) instead!"). Build with -s ASSERTIONS=1 for more info.)