Userfriendly error message for non-exsisting model

[bosd]

Try to import to a non exsisting mdel displays an error message.
The message itself could be improved by only showing the relevant part in the panel.
Desired:
message': "Object product.attribute.line doesn't exist

Current output in full

╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Odoo Connection Error ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Could not connect to Odoo to get model fields. Error: {'code': 200, 'message': 'Odoo Server Error', 'data': {'name': 'odoo.exceptions.UserError', 'debug': 'Traceback (most recent call last):\n  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 2547, in  │
│ __call__\n    response = request._serve_nodb()\n  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 2019, in _serve_nodb\n    response = self.dispatcher.dispatch(rule.endpoint, args)\n  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 2339, in        │
│ dispatch\n    result = endpoint(**self.request.params)\n  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 754, in route_wrapper\n    result = endpoint(self, *args, **params_ok)\n  File "/opt/odoo/custom/src/odoo/odoo/addons/base/controllers/rpc.py",   │
│ line 178, in jsonrpc\n    return dispatch_rpc(service, method, args)\n  File "/opt/odoo/custom/src/odoo/odoo/http.py", line 412, in dispatch_rpc\n    return dispatch(method, params)\n  File "/opt/odoo/custom/src/odoo/odoo/service/model.py", line 58, in    │
│ dispatch\n    res = execute_kw(db, uid, *params[3:])\n  File "/opt/odoo/custom/src/odoo/odoo/service/model.py", line 81, in execute_kw\n    return execute(db, uid, obj, method, *args, **kw or {})\n  File "/opt/odoo/custom/src/odoo/odoo/service/model.py",  │
│ line 87, in execute\n    res = execute_cr(cr, uid, obj, method, *args, **kw)\n  File "/opt/odoo/custom/src/odoo/odoo/service/model.py", line 70, in execute_cr\n    raise UserError(env._("Object %s doesn\'t exist", obj))\nodoo.exceptions.UserError: Object  │
│ product.attribute.line doesn\'t exist\n', 'message': "Object product.attribute.line doesn't exist", 'arguments': ["Object product.attribute.line doesn't exist"], 'context': {}}}                                                                               │
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