Can't connect to the Local server via Ethernet on the local network

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Sounds like you're using DHCP, losing your lease, getting a new IP address, and then you can't connect. Also, 0.0.0.0 is...not a valid IP (it's a range...all addresses). Wild guess incoming.

So you need to make sure that your server -- whatever computer you're running it on -- has a static IP address. Then it won't change over time.

Also, if you're not accessing outside your home (and even if you are, really) don't forward/open your ports. Find a different remote access strategy that doesn't just open your internal network to the world. Reverse proxy isn't that terribly hard to figure out, Tailscale is a really easy solution, and VPN is always a good solution (which Tailscale is a user-friendly implementation of).