After fresh install Erpnext 14 on Ubuntu 22.04 error object not bound

following error i getting after hit bench start on a absolutly fresh installation (karani tutorial 1:1).
How can i find what is here the problem … ???
Traceback (most recent call last):
File “/home/enx/frappe-bench/apps/frappe/frappe/middlewares.py”, line 16, in call
return super().call(environ, start_response)
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/middleware/shared_data.py”, line 247, in call
return self.app(environ, start_response)
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/middleware/shared_data.py”, line 247, in call
return self.app(environ, start_response)
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/local.py”, line 237, in application
return ClosingIterator(app(environ, start_response), self.cleanup)
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/wrappers/request.py”, line 194, in application
resp = f(*args[:-2] + (request,))
File “/home/enx/frappe-bench/apps/frappe/frappe/app.py”, line 93, in application
for after_request_task in frappe.get_hooks(“after_request”):
File “/home/enx/frappe-bench/apps/frappe/frappe/init.py”, line 1495, in get_hooks
if conf.developer_mode:
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/local.py”, line 316, in get
obj = instance._get_current_object()
File “/home/enx/frappe-bench/env/lib/python3.10/site-packages/werkzeug/local.py”, line 495, in _get_current_object
raise RuntimeError(unbound_message) from None
RuntimeError: object is not bound

What [step] were you doing when this happened?
Very difficult to guess what caused it with the info you have offered

ok… i dont know why… but… i have fix it…

i set my sitename in /etc/hosts file ans do bench start…

after that it opens the site correctly…

maybe anyone can explain to me why this work now ???