@FiM8726:
Error when running interface function AbandonedRuins.exclude_surface:
AbandonedRuins_updated_fork/lua/surfaces.lua:75: attempt to index field 'excluded' (a nil value)
Thanks for the report! This was a bug in Abandoned Ruins which seems to have been fixed on the other end. I've just tried to start a new game with AbandonedRuins_updated_fork (1.4.18) and got no error. Does it work with that version for you as well?
For the future, please create a new thread if you report a new bug! Adding additional information to another thread is appreciated, but it's easier to handle different bugs if they have been reported in separate threads. :-)