Error with new doctype

Hi Everyone,

I have created a new doctype in my production setup of ERP.
However it is working fine, but due to this I am receiving some errors.

Actually when I click on Links from the menu in “Item” doctype, it gives me an error.

Below is the error message I am receiving:

Traceback (innermost last):
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/”, line 67, in application
response = frappe.handler.handle()
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/”, line 75, in handle
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/”, line 109, in execute_cmd
ret =, **frappe.form_dict)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/”, line 773, in call
return fn(*args, **newargs)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/desk/form/”, line 90, in get_linked_doctypes
return frappe.cache().hget(“linked_doctypes”, doctype, lambda: _get_linked_doctypes(doctype))
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/utils/”, line 123, in hget
value = generator()
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/desk/form/”, line 90, in
return frappe.cache().hget(“linked_doctypes”, doctype, lambda: _get_linked_doctypes(doctype))
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/desk/form/”, line 111, in _get_linked_doctypes
doctype_module = load_doctype_module(dt)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/modules/”, line 64, in load_doctype_module
doctype_python_modules[key] = frappe.get_module(get_module_name(doctype, module, prefix))
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/”, line 583, in get_module
return importlib.import_module(modulename)
File “/usr/lib/python2.7/importlib/”, line 37, in import_module
ImportError: No module named design_change.design_change

Note: I have checked there is no file in my production server with the name

I appreciate if any one can help me to get rid off this problem.

Ruchin Sharma

I think this is already fixed.