Android development error Solution

Today, we encountered the following error during debugging:

Launch error: failed to connect to remote VM. Connection timed out.

I did not find a solution after I checked it online, so I tried it and found that as long as you select your project in debug, right-click and select terminate and remove, that is, the end and remove options or selectTerminate (end) is also acceptableAnd click debug again! If you want to debug thisProgramYou can also click relaunch (with a picture at the end)

The specific reason seems to be that although the connection is disconnected, this project still occupies the port and connection, so an error is reported.

But after I click it once, this error will no longer occur. Even if I operate like before, it will not be reported.

Weird.