Version 4.2 pihole service and lighttped keep crashing

[jfb]

*** [ DIAGNOSING ]: Operating system
[✓] Debian GNU/Linux buster/sid

Buster/sid is not yet a supported operating system.

UPDATE FAILED: Pi-hole version is v4.2 -- Unable to complete update, please contact Pi-hole Support

Buster/Sid does have different lighttpd package version than the released Stretch. Since we are unable to support a moving target we are unable to support Buster/Sid.