Is it safe to backup the entire /etc/pihole directory and restore it on a fresh Pi install?

[rdwebdesign]

I never tried that, but recently another user tried the same thing with success.

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Web Interface Broken after Power Loss

Hardware is a Raspberry Pi Gen 2 with 2GB of RAM and a 8GB sd card. I'm using it as a DHCP server as well. Expected Behaviour: Pihole web interface loads when accessing http://pihole/admin. Actual Behaviour: Instead, I get a 503 Service not available error. This happened after a sudden loss of power (power went out in neigborhood). The ad blocking and CLI still works. Debug Token: https://tricorder.pi-hole.net/wNOrLW43/