web_company_color: Error when computing colors when using webp image as logo

[tarteo]

Module

web_company_color

Describe the bug

When using the compute colors feature this error pops up when having a webp image as company logo:

Odoo Server Error

RPC_ERROR
Odoo Server Error

Occured on oca-web-18-0-pr3428-f81eb7e4c68e.runboat.odoo-community.org on model res.company on 2026-05-06 14:08:19 GMT

Traceback (most recent call last):
  File "/opt/odoo/odoo/http.py", line 2167, in _transactioning
    return service_model.retrying(func, env=self.env)
  File "/opt/odoo/odoo/service/model.py", line 157, in retrying
    result = func()
  File "/opt/odoo/odoo/http.py", line 2134, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "/opt/odoo/odoo/http.py", line 2382, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "/opt/odoo/odoo/addons/base/models/ir_http.py", line 333, in _dispatch
    result = endpoint(**request.params)
  File "/opt/odoo/odoo/http.py", line 754, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "/opt/odoo/addons/web/controllers/dataset.py", line 42, in call_button
    action = call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo/odoo/api.py", line 535, in call_kw
    result = getattr(recs, name)(*args, **kwargs)
  File "/mnt/data/odoo-addons-dir/web_company_color/models/res_company.py", line 191, in button_compute_color
    _r, _g, _b = image_to_rgb(convert_to_image(self.logo))
  File "/mnt/data/odoo-addons-dir/web_company_color/utils.py", line 15, in convert_to_image
    return Image.open(BytesIO(base64.b64decode(field_binary)))
  File "/opt/odoo-venv/lib/python3.10/site-packages/PIL/Image.py", line 3008, in open
    raise UnidentifiedImageError(
PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x7fa54ad49df0>

The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    RPC_ERROR
        at makeErrorFromResponse (http://oca-web-18-0-pr3428-f81eb7e4c68e.runboat.odoo-community.org/web/assets/a4e1159/web.assets_web.min.js:3178:165)
        at XMLHttpRequest.<anonymous> (http://oca-web-18-0-pr3428-f81eb7e4c68e.runboat.odoo-community.org/web/assets/a4e1159/web.assets_web.min.js:3184:13)

To Reproduce

Affected versions: 18.0

Steps to reproduce the behavior:

1. Go to settings > users & companies > companies
2. open a company
3. upload a webp image as logo
4. click "Compute colors from logo" in the company styles tab
5. the error appears

Additional context
Tested in runboat