Error 520 Web server unknown error

[giovacuo]

Hello all, I try to access at my wordpress login but it not work.
The error is “error 520 Web server is returning an unknown error“
Ray ID: 4e422a787f5eb7e1 • 2019-06-09 09:46:14 UTC
Help me
Thanks a lot

[sdayman]

A 520 means your server is not responding properly:

Community Tip - Fixing Error 520: Web server is returning an unknown error

Error Try the suggestions in this Community Tip to help you fix “Error 520: Web server is returning an unknown error”. Background Error 520 is essentially a catch-all response when something unexpected happens or when the origin server incorrectly interprets or does not tolerate a request due to a protocol violation or an empty response. A 520 error occurs when the connection started on the origin web server, but that the request was not completed. The most common reason why this would occur …