При открытии проекта в Mine-Imator выдаёт ошибку

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FATAL ERROR in

action number 1

of Draw Event

for object app:

REAL argument is unset

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called from - gml_Script_render_world_model_part (line 66)

called from - gml_Script_render_world_tl (line 129)

called from - gml_Script_render_world (line 36)

called from - gml_Script_render_low (line 26)

called from - gml_Script_view_update_surface (line 27)

called from - gml_Script_view_update (line 9)

called from - gml_Script_view_draw (line 296)

called from - gml_Script_view_area_draw (line 9)

called from - gml_Script_panel_area_draw (line 51)

called from - gml_Script_window_draw (line 20)

called from - gml_Script_app_event_draw (line 7)

called from - gml_Object_app_Draw_0 (line 0)