500: Internal Server Error

Traceback

Traceback (most recent call last):
  File "/home/odoo-volley/odoo-v13/odoo/addons/base/models/ir_http.py", line 234, in _dispatch
    result = request.dispatch()
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 797, in dispatch
    r = self._call_function(**self.params)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 356, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo-volley/odoo-v13/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 344, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 903, in __call__
    return self.method(*args, **kw)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 525, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo-volley/volley-corpo/addons/sports_championship/controllers/main.py", line 141, in view_all_teams
    teams=teams,
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/odoo-volley/odoo-v13/odoo/addons/base/models/ir_http.py", line 234, in _dispatch
    result = request.dispatch()
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 797, in dispatch
    r = self._call_function(**self.params)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 356, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo-volley/odoo-v13/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 344, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 903, in __call__
    return self.method(*args, **kw)
  File "/home/odoo-volley/odoo-v13/odoo/http.py", line 525, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo-volley/volley-corpo/addons/sports_championship/controllers/main.py", line 141, in view_all_teams
    teams=teams,
UnboundLocalError: local variable 'teams' referenced before assignment