This error message appears from the Chrome browser when it detects a problem with the SSL certificate. I assume the web service url starts with https://116.50.77.22 (secure HTTP).
Typically, SSL certificates are issued to a computer name or a domain name on the Internet compared to an IP address. You may see this message because of a name mismatch, and instead of using the IP address, use the name specified in the SSL certificate. You can view more detailed information about what causes the error by manually viewing the web service URL, and when prompted with the original error, select "Go to 116.50.77.22." Then you can click on the padlock icon in the address bar, as shown below, and on the Connection tab you should see details similar to those shown. If you see that “Server certificate does not match the URL,” click the “Certificate Information” link to view information about the SSL certificate used by the server. The name that you see after "Issued to:" is the name associated with the certificate and should be the name used in the URL. For example, if you see "Released: M23458", you should use the URL starting with https://M23458/ to access the web service.

If you see the other errors listed on the Connection tab, I would advise you to look at Qaru to get specific recommendations when working with them. You may have to solve all the problems before the original error message (your connection is not private ...) disappears, and each of them will require a different set of steps for addressing.
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