The website `default_lang_id` was not required,
while the algorithm choosing the website language
expects it to be required.
This solves the below issue, when your browser language is en_US:
- add a second language to the website (e.g. fr_BE or es_VE),
- in the website settings, remove English from the languages
- in the website settings, unset the default language
- try to go on the website
You will have a crash:
```
File "/home/odoo/src/odoo/saas-11/addons/website/models/ir_http.py", line 193, in _dispatch
resp.set_cookie('website_lang', request.lang)
File "/usr/lib/python2.7/dist-packages/werkzeug/wrappers.py", line 992, in set_cookie
self.charset))
File "/usr/lib/python2.7/dist-packages/werkzeug/http.py", line 905, in dump_cookie
value = to_bytes(value, charset)
File "/usr/lib/python2.7/dist-packages/werkzeug/_compat.py", line 106, in to_bytes
raise TypeError('Expected bytes')
TypeError: Expected bytes
```
This is because the `request.lang` is set to `False`
because of the below algorithm in `ir_http.py`:
```
nearest_lang = not func and self.get_nearest_lang(path[1])
url_lang = nearest_lang and path[1]
preferred_lang = ((cook_lang if cook_lang in langs else False)
or self.get_nearest_lang(request.lang)
or request.website.default_lang_code)
is_a_bot = self.is_a_bot()
request.lang = request.context['lang'] = nearest_lang or preferred_lang
```
`nearest_lang` is `False`, because there is no nearest language
available for the browser lang (`en_US`)
`cook_lang` is `False` for users who never went on the website
`request.website.default_lang_code`, which is the last feedback,
is also `False` because you removed the default language
in the website settings.
opw-695621
0105cbbcf9