[MacOS] stopping Yadoms is very long

After having started yadoms from command line; then stopping it (Ctrl+C) takes a long time to be effective.

It appears that the stopping behavior from yadoms code is not executed as expected

```
06:22:53 : Main : [Error] : Fail to wait the app end event
06:23:00 : Supervisor : [Error] : Fail to wait the app end event

```