Can somebody help me

So i was doing a cyop level then when i shut the game down and i reopened it 

it told me this:

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ERROR in

action number 1

of Alarm Event for alarm 0

for object obj_modMenu:

Illegal Buffer Index -1

at gml_Script_file_text_read_all

gml_Script_file_text_read_all (line -1)

gml_Script_loadCustomLevel

gml_Object_obj_modMenu_Alarm_0

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So can someone tell me how can i fix this here is my rooms