After logging in to the web console I saw an update was available so I proceeded to ssh to the instance,
pihole -up followed by failures resulting from the two dependencies mentioned above.
Users expect updates to work with zero extra problems, not break components of the system. Otherwise, the upgrade should gracefully fail.
php7.3-fpm and lighttpd services both show failed state and admin UI is down as a result.
lighttpd: /usr/sbin/lighttpd: symbol lookup error: /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.1: undefined symbol: VAL_CTX_new, version OPENSSL_1_1_0