Task: Fix Nginx "bind() to :: :80 failed (98: Address already in use)" Error

Task: Fix Nginx "bind() to :: :80 failed (98: Address already in use)" Error: a task in Terminal-Lego-15k (Harbor dataset). The key observation is that the error references :: :80 (IPv6 port 80), yet no process is actually listening on port 80 (neither IPv4 nor IPv6). The lsof -i :80 command…