Describe the bug

In Dart-Code, if I try to launch the Android emulator, and virtualization support is disabled in the BIOS, or another emulator such as VirtualBox is already running, then QEMU will fail to launch, but no error is shown to the user. VS Code just keeps showing a spinner saying it is waiting for the emulator to start.

Expected behavior

It would be nice if the user were alerted to the fact that QEMU couldn't be started.