Error while renaming newly created doctype

I’m getting the following error while renaming a newly created doctype. how to resolve it?

Traceback (most recent call last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/app.py", line 61, in application
    response = frappe.handler.handle()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 21, in handle
    data = execute_cmd(cmd)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/handler.py", line 56, in execute_cmd
    return frappe.call(method, **frappe.form_dict)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1026, in call
    return fn(*args, **newargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/rename_doc.py", line 36, in rename_doc
    out = old_doc.run_method("before_rename", old, new, merge) or {}
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 772, in run_method
    out = Document.hook(fn)(self, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 1048, in composer
    return composed(self, method, *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 1031, in runner
    add_to_return_value(self, fn(self, *args, **kwargs))
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 766, in <lambda>
    fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/doctype/doctype.py", line 333, in before_rename
    self.rename_files_and_folders(old, new)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/doctype/doctype.py", line 348, in rename_files_and_folders
    subprocess.check_output(['mv', get_doc_path(self.module, 'doctype', old), new_path])
  File "/usr/lib/python2.7/subprocess.py", line 574, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
CalledProcessError: Command '[u'mv', u'/home/frappe/frappe-bench/apps/erpnext/erpnext/buying/doctype/import_permit', u'/home/frappe/frappe-bench/apps/erpnext/erpnext/buying/doctype/import_permission']' returned non-zero exit status 1

can u check folder exist in erpnext/erpnext/buying/doctype named as “import_permission”. if yes please delete it and then try

Hi,

there is no such a doctype

where is import_permit?