Dart_LoadScriptFromKernel: The binary program does not contain 'main'

I just run this code in VsCode and show this problem Dart_LoadScriptFromKernel: The binary program does not contain 'main'.

Dart version:2.3.2

void main() {
  print("hello");
}

is there any wrong with configuration? [enter image description here][1]

screenshot: [1]: https://i.stack.imgur.com/Dpv79.png