Openwrt DNS Failure

Hello, I have a Linksys WRT-1900AC with OpenWRT installed, and Tailscale installed.
I have used tailscale in conjunction with OpenWRT before on a Ubiquiti EdgeRouter with good success.

However, after setting this router, which included accidentally deleting some default firewall rules (Which was fixed to the way it was, and matches the EdgeRouter) and some other changes, I am unable to resolve DNS queries.

The log output mostly consists of:
openwrt dns: resolver: forward: no upstream resolvers set, returning servfail

Pinging 1.1.1.1 works, however openwrt.org resolves to the dreaded "ping: bad address"

I am not sure what I have done wrong, I suspect I may have messed some file up during ssh, but none of the logs indicate a messed up file.

Any suggestions?? Thanks!

Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button:
grafik
Remember to redact passwords, MAC addresses and any public IP addresses you may have:

ubus call system board
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
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