Cannot connect 5037? how to do?

AppInventor tools located here: C:\Program Files\MIT App Inventor

ADB path: C:\Program Files\MIT App Inventor\from-Android-SDK\platform-tools\adb
Bottle v0.12.13 server starting up (using WSGIRefServer())...
Listening on http://127.0.0.1:8004/
Hit Ctrl-C to quit.

錯誤: 找不到處理程序 "emulator64-crash-service.exe"。
錯誤: 找不到處理程序 "qemu-system-x86_64.exe"。
錯誤: 找不到處理程序 "emulator.exe"。
錯誤: 找不到處理程序 "adb.exe"。
Problem stopping emulator : status 128
cannot connect to daemon at tcp:5037: cannot connect to 127.0.0.1:5037: 無法連線,因為目標電腦拒絕連線。 (10061)
Killed adb
127.0.0.1 - - [18/Mar/2026 15:31:56] "GET /reset/ HTTP/1.1" 200 39

Here are alternatives to the MIT emulator you can try.