Unknown error Error code 520

Web server is returning an unknown error Error code 520

Checked all possible ways but very frustrated to get such error repeatedly.

VPS server is responding when accessed using http.

Any suggested is highly appreciated…

Cloudflare Ray ID: 884861385d9149a2
Test url: https://printsundar.online/loginAPI/hello

The “test” URL you gave works for me.

If you’re still seeing the 520 error, take a look at this resource: