In Odoo 14

Import the WebRequest and overwrite the _callfunction method, add the script to your module, include in the init file

# -*- coding: utf-8 -*-
from odoo.http import WebRequest, Response
import logging
from odoo.service import security, model as service_model
from odoo.sql_db import flush_env

_logger = logging.getLogger(__name__)


def _call_function(self, *args, **kwargs):
    request = self
    if self.endpoint.routing['type'] != self._request_type:
        msg = "%s, %s: Function declared as capable of handling request of type '%s' but called with a request of type '%s'"
        params = (self.endpoint.original, self.httprequest.path, self.endpoint.routing['type'], self._request_type)
        _logger.info(msg, *params)
        # raise werkzeug.exceptions.BadRequest(msg % params)

    if self.endpoint_arguments:
        kwargs.update(self.endpoint_arguments)

    # Backward for 7.0
    if self.endpoint.first_arg_is_req:
        args = (request,) + args

    first_time = True

    # Correct exception handling and concurency retry
    @service_model.check
    def checked_call(___dbname, *a, **kw):
        nonlocal first_time
        # The decorator can call us more than once if there is an database error. In this
        # case, the request cursor is unusable. Rollback transaction to create a new one.
        if self._cr and not first_time:
            self._cr.rollback()
            self.env.clear()
        first_time = False
        result = self.endpoint(*a, **kw)
        if isinstance(result, Response) and result.is_qweb:
            # Early rendering of lazy responses to benefit from @service_model.check protection
            result.flatten()
        if self._cr is not None:
            # flush here to avoid triggering a serialization error outside
            # of this context, which would not retry the call
            flush_env(self._cr)
            self._cr.precommit.run()
        return result

    if self.db:
        return checked_call(self.db, *args, **kwargs)
    return self.endpoint(*args, **kwargs)

setattr(WebRequest, '_call_function', _call_function)