Frappe updating problem

hello ,
When I try to update the system , it gives me this issue :
“frappe is not in the sudoers file. This incident will be reported.”
because I have the problem in my desk where module names doesn’t appear
thank you
PS : I use :
ERPNext: v11.1.20 (master)
Frappe Framework: v12.x.x-develop () (develop)