I see regularly the following debug print on Nautilus startup:
GLib-CRITICAL **: 10:52:52.992: g_hash_table_foreach: assertion 'hash_table != NULL' failed. This is because the
emit_change_signals_for_all_files_in_all_directories function is called
before the directories hash table is initialzed. Let's return early
to prevent usage of the uninitialized hash table.