The appium Server does not connect

Hi I use Appium studio and Emulator from android studio
All was ok until today .
when i tray to rum my test at the IntelliJ ( java ) I got this error:

rg.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: Could not proxy command to the remote server. Original error: socket hang up

the adb is ok its recognize the device

Probably will get a better answer on Appium Studio forum: