Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/odoo/addons/http_routing/models/ir_http.py", line 547, in _postprocess_args
_, path = rule.build(arguments)
File "/usr/lib/python3/dist-packages/werkzeug/routing.py", line 809, in build
add(self._converters[data].to_url(values[data]))
File "/usr/lib/python3/dist-packages/odoo/addons/http_routing/models/ir_http.py", line 256, in to_url
return slug(value)
File "/usr/lib/python3/dist-packages/odoo/addons/http_routing/models/ir_http.py", line 91, in slug
raise ValueError("Cannot slug non-existent record %s" % value)
ValueError: Cannot slug non-existent record mail.channel()