This article will explain what this string likely means, how local HTTPS servers work, common scenarios where you might encounter such an address, and how to fix or investigate access issues.
: The browser blocks the connection because the self-signed local certificate expired or is untrusted. https localhost11501 2021
openssl req -x509 -newkey rsa:2048 -nodes -keyout localhost-key.pem -out localhost.pem -days 365 -subj "/CN=localhost" This article will explain what this string likely
GET / - 200 OK https://localhost:11501/api/data how local HTTPS servers work
If you see https://localhost11501/2021 in old notes, try guessing the intended format: https://localhost:11501/2021 (port after colon) or https://localhost:11501/2021/ (trailing slash).
Localhost refused to connect: Here's how to fix it - Netpeak Software
Your browser does not trust the self-signed certificate the local server is using.