The global group Indic_bot was created and delted in 2011. Somehow it's restricting wiki set hasn't been deleted from the database.
MariaDB [centralauth_p]> select * from global_group_restrictions; +--------------------+---------+ | ggr_group | ggr_set | +--------------------+---------+ | global-bot | 2 | | global-sysop | 7 | | Indic_Bots | 8 | | new-wikis-importer | 12 | +--------------------+---------+ 4 rows in set (0.00 sec) MariaDB [centralauth_p]>