HTTP 305 Use Proxy was defined to indicate that the resource must be accessed through a proxy specified in the Location header. This status code has been deprecated due to security concerns — it could be exploited to redirect traffic through malicious proxies. Modern browsers do not honor it.
An older server or application is returning this deprecated status code.
Replace the 305 response with an appropriate redirect (301, 302, or 307) since 305 is deprecated and ignored by modern browsers.
If proxy access is required, configure it via system or browser proxy settings rather than HTTP status codes.