Might sound silly, but instead of doing https://localhost:6875, try 127.0.0.1:6875 or you internal network ip (for testing until you get a domain) e.g. 192.168.0.1as might be a name resolving thing.
https://localhost:6875
127.0.0.1:6875
192.168.0.1
Also have you got TLS/HTTPS setup?
Might sound silly, but instead of doing
https://localhost:6875, try127.0.0.1:6875or you internal network ip (for testing until you get a domain) e.g.192.168.0.1as might be a name resolving thing.Also have you got TLS/HTTPS setup?