[Web favicon] gives 500 internal server error when restoring from backup -> (AttributeError: 'res.company' object has no attribute '_get_favicon').

[Dream1975]

Module

web_favicon

Describe the bug

I installed the module to test and since then I can't use the gui anymore as it gives a "500: internal server error". Did make a backup but that seems to be corrupted also.

To Reproduce

Affected versions: 18.0

Steps to reproduce the behavior:

1. Install the module
2. Add a favicon in both the favicon field in company and in website settings
3. Make a backup of the database (zip)
4. Restore the database (in a clean odoo environment, off course with all addons in the addon directory that were alsop present when making the backup
5. Select the database in database manager
6. You'll see the 500 page and below error appears in the log

Expected behavior
No Internal server error

Additional context
I tried adding a favicon column in table res_company (directly in the database) but this didn't solve it, unfortunately. As I can't get in the gui I also can't take a look in the technical part of views/models etc where the field is mentioned.

So I have 2 questions:

1. Does anyone know where to look so the 500 doesn't appear instantly when selecting the database in the database manager? Either in changing something directly in the database or CLI?
2. Might this be a bug in the module (I think so as I tested with an old backup and the same happened

Error traceback

> Traceback (most recent call last):

File "<2011>", line 1931, in template_2011
File "<2011>", line 1309, in template_2011_content
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_qweb.py", line 2533, in _load_values
return get_value()
^^^^^^^^^^^
File "<2011>", line 1299, in template_2011_t_cache_0_cache
File "<2011>", line 565, in template_2011_t_cache_0
AttributeError: 'res.company' object has no attribute '_get_favicon'

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

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/odoo/http.py", line 2554, in call
response = request._serve_db()
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/http.py", line 2081, in _serve_db
return self._transactioning(
^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/http.py", line 2144, in _transactioning
return service_model.retrying(func, env=self.env)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 156, in retrying
result = func()
^^^^^^
File "/usr/lib/python3/dist-packages/odoo/http.py", line 2111, in _serve_ir_http
response = self.dispatcher.dispatch(rule.endpoint, args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/http.py", line 2272, in dispatch
return self.request.registry['ir.http']._dispatch(endpoint)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_http.py", line 335, in dispatch
result.flatten()
File "/usr/lib/python3/dist-packages/odoo/tools/facade.py", line 83, in wrap_func
func(self.wrapped, *args, **kwargs)
File "/usr/lib/python3/dist-packages/odoo/http.py", line 1418, in flatten
self.response.append(self.render())
^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/http.py", line 1410, in render
return request.env["ir.ui.view"]._render_template(self.template, self.qcontext)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 453, in _render_template
return super()._render_template(template, values=values)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 2218, in _render_template
return self.env['ir.qweb']._render(template, values)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/tools/profiler.py", line 313, in _tracked_method_render
return method_render(self, template, values, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_qweb.py", line 607, in _render
result = ''.join(rendering)
^^^^^^^^^^^^^^^^^^
File "<185>", line 263, in template_185
File "<185>", line 252, in template_185_content
File "<184>", line 51, in template_184
File "<184>", line 40, in template_184_content
File "<2011>", line 1939, in template_2011
odoo.addons.base.models.ir_qweb.QWebException: Error while render the template
AttributeError: 'res.company' object has no attribute '_get_favicon'
Template: website.layout
Path: /t/html/head/link[3]
Node:

[Dream1975]

Did find out that if I make a new empty database, then install web_favicon in it (so it adjusts views etc as I saw in the logs) and then import the previous database then it will run with no 500 server error.

I therefore suspect that when importing a (backup) database that has web_favicon with status installed in ir_module_module then
these vieuws also need to be updated which doesn't seem to at the moment.

The updates the module does (it would seem that the res_company_views.xml is the reason for the previous crash).
2025-09-20 19:02:57,747 34 INFO Leeg odoo.modules.registry: module web_favicon: creating or updating database tables
2025-09-20 19:02:57,830 34 INFO Leeg odoo.modules.loading: loading web_favicon/views/res_company_views.xml
2025-09-20 19:02:57,901 34 INFO Leeg odoo.modules.loading: loading web_favicon/views/templates.xml