can't save project

[Milky39 0]

anyone hlp me please i can't save project

############################################################################################
FATAL ERROR in
action number 1
of Draw Event
for object app:

string_length argument 1 incorrect type (undefined) expecting a String (YYGS)
############################################################################################
--------------------------------------------------------------------------------------------
called from - gml_Script_buffer_write_string (line 1)
called from - gml_Script_json_save_value (line 1)
called from - gml_Script_json_save_var (line 1)
called from - gml_Script_project_save_timeline (line 47)
called from - gml_Script_project_save_objects (line 1)
called from - gml_Script_project_save (line 21)
called from - gml_Script_project_save_as (line 43)
called from - gml_Script_popup_saveas_draw (line 41)
called from - gml_Script_popup_draw (line 110)
called from - gml_Script_window_draw (line 27)
called from - gml_Script_app_event_draw (line 7)
called from - gml_Object_app_Draw_0 (line 0)
 

[Sir Mistick The Yopstick 71]

So you want to save the project but every time you try you get this error?

Hmmm.