I'm using Odoo 18 → WEBSITE , while trying to add another NEW WEBSITE, I got this error : 

Looking forward for the solution for this problems.

File "/opt/odoo18/odoo/http.py", line 2166, in _transactioning
    return service_model.retrying(func, env=self.env)
  File "/opt/odoo18/odoo/service/model.py", line 156, in retrying
    result = func()
  File "/opt/odoo18/odoo/http.py", line 2133, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "/opt/odoo18/odoo/http.py", line 2381, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "/opt/odoo18/odoo/addons/base/models/ir_http.py", line 333, in _dispatch
    result = endpoint(**request.params)
  File "/opt/odoo18/odoo/http.py", line 754, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "/opt/odoo18/addons/web/controllers/dataset.py", line 36, in call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo18/odoo/api.py", line 535, in call_kw
    result = getattr(recs, name)(*args, **kwargs)
  File "/opt/odoo18/addons/web/models/models.py", line 72, in web_save
    self = self.create(vals)
  File "<decorator-gen-201>", line 2, in create
  File "/opt/odoo18/odoo/api.py", line 497, in _model_create_multi
    return create(self, [arg])
  File "/opt/odoo18/addons/event/models/res_config_settings.py", line 68, in create
    configs = super().create(vals_list)
  File "<decorator-gen-99>", line 2, in create
  File "/opt/odoo18/odoo/api.py", line 498, in _model_create_multi
    return create(self, arg)
  File "/opt/odoo18/odoo/addons/base/models/res_config.py", line 552, in create
    return super().create(vals_list)
  File "<decorator-gen-31>", line 2, in create
  File "/opt/odoo18/odoo/api.py", line 498, in _model_create_multi
    return create(self, arg)
  File "/opt/odoo18/odoo/models.py", line 5034, in create
    records = self._create(data_list)
  File "/opt/odoo18/odoo/models.py", line 5218, in _create
    cr.execute(SQL(
  File "/opt/odoo18/odoo/sql_db.py", line 357, in execute
    res = self._obj.execute(query, params)