I don’t quite understand the question. The address of my computer is 192.168.0.114. The Pi is hooked in with a ethernet wire, and the website https://nextcloudpi.local works fine, but navigating to a port 4443 results in the above error.
For a different reason, I needed to replace my TP-link router with a new TP-link mesh network. I just plugged in the Nextcloud Pi to the new network and it worked without any configuration. I can also visit the admin page now. Not sure why things did not work on the old router, but it may not have been an issue with nextcloudpi.