"ERR_CONNECTION_RESET" appeared when logging inpostman. I tried many methods at that time, and finally found out after searching many articles. This article is about five comprehensive methods to solve the "ERR_CONNECTION_RESET" error.
Portal:How to fix "ERR_CONNECTION_RESET" error - Lightning Blog
At that time, I tried to reset the TCP/IP settings and restarted the computer, and the problem was successfully solved.