You can Fix ERR_SSL_PROTOCOL_ERROR by clearing Chrome's Browsing Data.
i. If you already have the correct date & time, it's time to clear Chrome's cache and cookies.
ii. To do so, press Ctrl + Shift + Delete and erase your browsing data.
What causes Err_ssl_protocol_error?
i. The system date or time is not correct.
ii. The #website or IP address is blocked by a #firewall or an antivirus program.
iii. SSL/TLS connections are blocked by a firewall or #antivirus program. the HOSTS file is corrupted.
What is Net :: Err_ssl_protocol_error?
Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error
This error occurs when the website has not enabled #SSL connections or has blocked port 443. This prevents the browsers from establishing a connection.
More info >>
https://ibmimedia.com/blog/70/solution-to-err-ssl-protocol-error
