АБ
Поменял путь до бинарника на тот что показал whereis
Feb 25 01:50:56 i3ima-deploy lighttpd[3767]: 2020-02-25 01:50:56: (server.c.1521) server started (lighttpd/1.4.54)
Feb 25 01:50:56 i3ima-deploy lighttpd[3767]: 2020-02-25 01:50:56: (gw_backend.c.499) bind failed for: unix:/var/run/lighttpd/php-fastcgi3767.sock-0 No such file or directory
Feb 25 01:50:56 i3ima-deploy lighttpd[3767]: 2020-02-25 01:50:56: (gw_backend.c.1490) [ERROR]: spawning gw failed.
Feb 25 01:50:56 i3ima-deploy lighttpd[3767]: 2020-02-25 01:50:56: (server.c.1529) Configuration of plugins failed. Going down.
Feb 25 01:50:56 i3ima-deploy systemd[1]: lighttpd.service: Main process exited, code=exited, status=255/EXCEPTION
Feb 25 01:50:56 i3ima-deploy systemd[1]: lighttpd.service: Failed with result 'exit-code'.Попробуй ради интереса
sudo mkdir /var/run/lighttpd