After level 8, the game started crashing with an error
ERROR in action number 1
of Create Event for object obj_game_manager:
Push :: Execution Error - Variable Index [9] out of range [9] - -6.visual_novel_data(100148,9)
at gml_Object_obj_game_manager_Create_0
gml_Object_obj_game_manager_Create_0 (line -1)
gml_Object_obj_loaded_manager_Create_0 (line -1)