Problem in save button in New Module

Hi
I am facing this issue while creating a new module in erpnext . after creation When i am saving that these errors are appearing.

Traceback (most recent call last):
File “/home/sadmin/frappe-bench/apps/frappe/frappe/desk/form/save.py”, line 12, in savedocs
doc = frappe.get_doc(json.loads(doc))
File “/home/sadmin/frappe-bench/apps/frappe/frappe/init.py”, line 602, in get_doc
return frappe.model.document.get_doc(arg1, arg2)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/model/document.py”, line 48, in get_doc
controller = get_controller(doctype)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/model/base_document.py”, line 43, in get_controller
raise ImportError, doctype
ImportError: Estimated Customer Quotation

Traceback (most recent call last):
File “/home/sadmin/frappe-bench/apps/frappe/frappe/app.py”, line 56, in application
response = frappe.handler.handle()
File “/home/sadmin/frappe-bench/apps/frappe/frappe/handler.py”, line 19, in handle
execute_cmd(cmd)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/handler.py”, line 42, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/init.py”, line 903, in call
return fn(*args, **newargs)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/desk/form/save.py”, line 12, in savedocs
doc = frappe.get_doc(json.loads(doc))
File “/home/sadmin/frappe-bench/apps/frappe/frappe/init.py”, line 602, in get_doc
return frappe.model.document.get_doc(arg1, arg2)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/model/document.py”, line 48, in get_doc
controller = get_controller(doctype)
File “/home/sadmin/frappe-bench/apps/frappe/frappe/model/base_document.py”, line 43, in get_controller
raise ImportError, doctype
ImportError: Estimated Customer Quotation

After Error

Before Error:

Hi @Aarti_Khajuria

Can you please share the screenshots of the doctype Estimated Customer Quotation?

Also please share your Frappe/ERPNext version.