Web Proxy will not run

I’m running Sophos Home XG V17-MR1 on a Qotom Q355G4 (Intel Core i5, 4GB RAM, 32GB SSD) and everything seems to be working fine except the Web Proxy service. It’s indicating “Stopped” in the GUI and when I click restart, it shows “Running” for a second then immediately goes back to “Stopped”. I’ve tried completely reinstalling Sophos XG but I’m still having the same issue. Any ideas?