So there's a Brand thing from our theme which is a model called as.product.brand. It has a Logo field, for, well, logo, and it's a binary field. We are trying to import the logos dynamically. I have prepared the below codes to loop over files and then figure out the Brand of the file and then update it. It works great when we're working with one file. But whenever I try this with multiple files I get this error: ValueError: Expected singleton: as.product.brand(9, 10, 8)​. 9, 10, 8 here are the brand IDs that were found. I am not sure how to resolve this, I am not even sure why its giving this error. I have added the full error and code below.

for ff in os.listdir(d):
	​ff_path = d +'/'+ ff
	​images =False                
	​​with open(ff_path, "rb") as image_file:
	​	​bytes= image_file.read()                    
	​	​images = base64.b64encode(bytes)                
	​	​image_name = os.path.splitext(ff)[0]                
	​	​if(image_name.startswith("Logo")):                        
	​	​	​prefix ="Logo_"                        
	​	​	​suffix ="_"  # Assumes there is always an underscore after the prefix                        
	​	​	​prefix_end = image_name.index(prefix) +len(prefix)                        
	​	​	​suffix_start = image_name.index(suffix, prefix_end)                        
	​	​	​image_name = image_name[prefix_end:suffix_start]                        
	​	​	​domain = self.get_domain(image_name) # Returns [('name','=ilike',name)]          
	​	​	​brands = brand_pool.search(domain, limit=1) # brand_pool = self.env['as.product.brand']     
	​	​	​if not brands:           
	​	​	​	​note = note +'\n'+str(ff)                        
	​	​	​​else:                            
	​	​	​	​note = note +'\n'+str(brands)                            
	​	​	​	​for brand in brands:                                
	​	​	​	​	​brand.logo = images

Error Message:

Traceback (most recent call last):
  File "C:\Program Files\Odoo\server\odoo\models.py", line 5108, in ensure_one
    _id, = self._ids
ValueError: too many values to unpack (expected 1)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Program Files\Odoo\server\odoo\http.py", line 1584, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
  File "C:\Program Files\Odoo\server\odoo\service\model.py", line 134, in retrying
    result = func()
  File "C:\Program Files\Odoo\server\odoo\http.py", line 1613, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "C:\Program Files\Odoo\server\odoo\http.py", line 1810, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "C:\Program Files\Odoo\server\odoo\addons\website\models\ir_http.py", line 235, in _dispatch
    response = super()._dispatch(endpoint)
  File "C:\Program Files\Odoo\server\odoo\addons\base\models\ir_http.py", line 149, in _dispatch
    result = endpoint(**request.params)
  File "C:\Program Files\Odoo\server\odoo\http.py", line 699, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "C:\Program Files\Odoo\server\odoo\addons\web\controllers\dataset.py", line 46, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "C:\Program Files\Odoo\server\odoo\addons\web\controllers\dataset.py", line 33, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "C:\Program Files\Odoo\server\odoo\api.py", line 462, in call_kw
    model.env.flush_all()
  File "C:\Program Files\Odoo\server\odoo\api.py", line 732, in flush_all
    self._recompute_all()
  File "C:\Program Files\Odoo\server\odoo\api.py", line 728, in _recompute_all
    self[field.model_name]._recompute_field(field)
  File "C:\Program Files\Odoo\server\odoo\models.py", line 6152, in _recompute_field
    field.recompute(records)
  File "C:\Program Files\Odoo\server\odoo\fields.py", line 1325, in recompute
    self.compute_value(recs)
  File "C:\Program Files\Odoo\server\odoo\fields.py", line 1347, in compute_value
    records._compute_field_value(self)
  File "C:\Program Files\Odoo\server\odoo\models.py", line 4186, in _compute_field_value
    getattr(self, field.compute)()
  File "c:\program files\odoo\server\addons\atharva_theme_base\models\brands.py", line 26, in _get_logo
    self.image_1920 = self.logo
  File "C:\Program Files\Odoo\server\odoo\fields.py", line 1132, in __get__
    record.ensure_one()
  File "C:\Program Files\Odoo\server\odoo\models.py", line 5111, in ensure_one
    raise ValueError("Expected singleton: %s" % self)
ValueError: Expected singleton: as.product.brand(9, 10, 8)

The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    at makeErrorFromResponse (http://localhost:8069/web/assets/2204-495f151/web.assets_backend.min.js:967:163)
    at XMLHttpRequest. (http://localhost:8069/web/assets/2204-495f151/web.assets_backend.min.js:975:13)