Error with Links while creating New Doctype

ERPNext Customize ERPNext
,
1

I am creating New Doctype “Customer Feedback” and wanted to link “Task” I am getting this error.

customer_feedback
customer_feedback1776×522 59.5 KB

2

Step - 1 : bench --site Your site console
Step -2 : frappe.reload_doc(‘selling’, ‘doctype’, ‘estimation’)
Step - 3 frappe.db.commit()