The system will crash with an error when we `fetch transactions` and then click on the total amount in the top right corner, because the method `action_open_bank_balance_in_gl` expects `exactly one journal record` (self.ensure_one()), but receives an empty recordset.

**Steps to Produce:-**

1. Install the `Accounting` module.
2. Navigate to `Invoicing > Bank`, then click on "Search Banks" and connect with the `Odoo Bank Sync Demo`.
3. Click on `Fetch Transactions` and wait for the process to complete.
4. In the new view, click on the `total amount` located in the `top right corner`.

**Error:-**
`ValueError: Expected singleton: account.journal()`

**Solution:-**
- At [1], in `default_context` we can see that `active_id` is not given.

 [1] https://github.com/odoo/enterprise/blob/4b8edc19dbece15f7843ec3647c464307e165906/account_online_synchronization/models/account_online.py#L878-L882

- So, in this commit now active_id is added in default_context to prevent the error

**Sentry - 6644825437**

The system crashed because it expected the information from the card to be in `dictionary` format, but it came in the `list of dictionaries`. Usually, when there is only one contact on the card, the system retrieves the details as a `Dictionary`. But if the card has details of more than one person, it receives a `list of dictionaries`.

When the `extracted_data` comes as list of dictionaries, then at [1], it raises the `TypeError`.

[1]
https://github.com/odoo/enterprise/blob/e5b21d77b6dfff2b1371909c3c1e17cecee43a19/crm_enterprise/tools/business_card_scanner.py#L85

**Steps to produce:-**
1. Install `CRM` and make sure you have iap tokens for `Lead generation`.
2. Go to CRM and click on gear icon and click on Import Business Cards.
3. Then upload this [image](https://drive.google.com/file/d/1wKONdUEAMQptNU8cUeZsUY1xVJBpD8Dk/view?usp=sharing).

**Traceback:-**
```py
Traceback (most recent call last):
  File "/home/odoo/odoo18/community/odoo/http.py", line 2467, in __call__
    response = request._serve_db()
  File "/home/odoo/odoo18/community/odoo/http.py", line 1970, in _serve_db
    return self._transactioning(
  File "/home/odoo/odoo18/community/odoo/http.py", line 2034, in _transactioning
    return service_model.retrying(func, env=self.env)
  File "/home/odoo/odoo18/community/odoo/service/model.py", line 164, in retrying
    result = func()
  File "/home/odoo/odoo18/community/odoo/http.py", line 2001, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "/home/odoo/odoo18/community/odoo/http.py", line 2263, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "/home/odoo/odoo18/community/odoo/addons/base/models/ir_http.py", line 349, in _dispatch
    result = endpoint(**request.params)
  File "/home/odoo/odoo18/community/odoo/http.py", line 757, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "/home/odoo/odoo18/community/addons/web/controllers/dataset.py", line 32, in call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/odoo/odoo18/community/odoo/service/model.py", line 84, in call_kw
    result = method(recs, *args, **kwargs)
  File "/home/odoo/odoo18/enterprise/crm_enterprise/models/crm_lead.py", line 34, in action_ocr_business_cards
    leads = card_scanner.business_cards_to_leads(attachments)
  File "/home/odoo/odoo18/enterprise/crm_enterprise/tools/business_card_scanner.py", line 82, in business_cards_to_leads
    lead_values = {
  File "/home/odoo/odoo18/enterprise/crm_enterprise/tools/business_card_scanner.py", line 85, in <dictcomp>
    if extracted_data.get(field)
AttributeError: 'list' object has no attribute 'get'
```

**Solution:-**
- We first checked whether the data returned from the OCR was a dictionary or a list of dictionaries (multiple contacts).
    - If it was just a dictionary, **we wrapped it in a list** so that we could handle everything the same way.
    - Then, we looped through each dictionary, picked out the allowed fields, and **created a lead for each one**.

**Sentry - 6658829547**