Using appium driver after driver.quit()

Issues/Bugs
1

I’m trying to launch the application after driver.quit(). It’s giving an exception as session ID is null. I tried using driver.closeApp and then driver.launchApp to relaunch app, its giving exception as chrome not reachable. Can any one help me in solving this issue!!

2

Driver.quit ->this keyword closes your driver aned delete the session
when to use it->
@AfterTest
public void teardown()
{
driver.quit
}