Error loading Doctype

Hi All,
I have created a Doctype and after realizing it should be Single I have deleted and created again with same name as SINGLE … now when I try to open the FORM/Empresa this is the error message

Traceback (most recent call last):
File “/home/helio/frappe-bench/apps/frappe/frappe/desk/form/load.py”, line 32, in getdoc
doc = frappe.get_doc(doctype, name)
File “/home/helio/frappe-bench/apps/frappe/frappe/init.py”, line 578, in get_doc
return frappe.model.document.get_doc(arg1, arg2)
File “/home/helio/frappe-bench/apps/frappe/frappe/model/document.py”, line 44, in get_doc
controller = get_controller(doctype)
File “/home/helio/frappe-bench/apps/frappe/frappe/model/base_document.py”, line 41, in get_controller
raise ImportError, doctype
ImportError: Empresa

Traceback (most recent call last):
File “/home/helio/frappe-bench/apps/frappe/frappe/app.py”, line 55, in application
response = frappe.handler.handle()
File “/home/helio/frappe-bench/apps/frappe/frappe/handler.py”, line 19, in handle
execute_cmd(cmd)
File “/home/helio/frappe-bench/apps/frappe/frappe/handler.py”, line 36, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/home/helio/frappe-bench/apps/frappe/frappe/init.py”, line 876, in call
return fn(*args, **newargs)
File “/home/helio/frappe-bench/apps/frappe/frappe/desk/form/load.py”, line 32, in getdoc
doc = frappe.get_doc(doctype, name)
File “/home/helio/frappe-bench/apps/frappe/frappe/init.py”, line 578, in get_doc
return frappe.model.document.get_doc(arg1, arg2)
File “/home/helio/frappe-bench/apps/frappe/frappe/model/document.py”, line 44, in get_doc
controller = get_controller(doctype)
File “/home/helio/frappe-bench/apps/frappe/frappe/model/base_document.py”, line 41, in get_controller
raise ImportError, doctype

Where and what should I correct this because when trying to install the APP on a new SITE the same error occurs.

/home/helio/frappe-bench/apps/frappe/frappe/app.py [ERROR]:
03:59:25 web.1 | Site: gestpensao
03:59:25 web.1 | Form Dict: {
03:59:25 web.1 | “cmd”: “frappe.desk.form.load.getdoc”,
03:59:25 web.1 | “doctype”: “Empresa”,
03:59:25 web.1 | “name”: “Empresa”
03:59:25 web.1 | }
03:59:25 web.1 | Request Error

the Doctype in reference is now SINGLE … so why is Frappe calling and where for something that was removed and replaced???