1. Error:
2. Odoo Server Error
3.  
4. Traceback (most recent call last):
5.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 1057, in _validate_fields
6.     check(self)
7.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 342, in _check_xml
8.     self.postprocess_and_fields(view.model, view_doc, view.id)
9.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 1055, in postprocess_and_fields
10.     fields_def = self.postprocess(model, node, view_id, False, fields)
11.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 834, in postprocess
12.     ).postprocess_and_fields(field.comodel_name, f, view_id)
13.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 1028, in postprocess_and_fields
14.     self.raise_view_error(_('Model not found: %(model)s') % dict(model=model), view_id)
15.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 533, in raise_view_error
16.     raise ValueError(message)
17. ValueError: Modelo no encontrado: None
18.  
19. Contexto del error:
20. Vista `product_fixed_margin_tree`
21. [view_id: 1453, xml_id: aucst_product_pricing_fix.product_fixed_margin_tree, model: product.template, parent_id: n/a]
22.  
23. During handling of the above exception, another exception occurred:
24.  
25. Traceback (most recent call last):
26.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 745, in parse
27.     self._tags[rec.tag](rec, de, mode=mode)
28.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 655, in _tag_record
29.     id = self.env(context=rec_context)['ir.model.data']._update(rec_model, self.module, res, rec_id or False, not self.isnoupdate(data_node), noupdate=self.isnoupdate(data_node), mode=self.mode)
30.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_model.py", line 1488, in _update
31.     record.write(values)
32.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 425, in write
33.     res = super(View, self).write(self._compute_defaults(vals))
34.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3169, in write
35.     field.determine_inverse(records)
36.   File "/usr/lib/python3/dist-packages/odoo/fields.py", line 1092, in determine_inverse
37.     getattr(records, self.inverse)()
38.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 273, in _inverse_arch
39.     view.write(data)
40.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 425, in write
41.     res = super(View, self).write(self._compute_defaults(vals))
42.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3149, in write
43.     self._write(old_vals)
44.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3320, in _write
45.     self._validate_fields(vals)
46.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 1061, in _validate_fields
47.     raise ValidationError("%s\n\n%s" % (_("Error while validating constraint"), tools.ustr(e)))
48. odoo.exceptions.ValidationError: ('Error mientras se validaban las restricciones\n\nModelo no encontrado: None\n\nContexto del error:\nVista `product_fixed_margin_tree`\n[view_id: 1453, xml_id: aucst_product_pricing_fix.product_fixed_margin_tree, model: product.template, parent_id: n/a]', None)
49.  
50. During handling of the above exception, another exception occurred:
51.  
52. Traceback (most recent call last):
53.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 653, in _handle_exception
54.     return super(JsonRequest, self)._handle_exception(exception)
55.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 312, in _handle_exception
56.     raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
57.   File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 87, in reraise
58.     raise value
59.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 695, in dispatch
60.     result = self._call_function(**self.params)
61.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 344, in _call_function
62.     return checked_call(self.db, *args, **kwargs)
63.   File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 97, in wrapper
64.     return f(dbname, *args, **kwargs)
65.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 337, in checked_call
66.     result = self.endpoint(*a, **kw)
67.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 939, in __call__
68.     return self.method(*args, **kw)
69.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 517, in response_wrap
70.     response = f(*args, **kw)
71.   File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 938, in call_button
72.     action = self._call_kw(model, method, args, {})
73.   File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 926, in _call_kw
74.     return call_kw(request.env[model], method, args, kwargs)
75.   File "/usr/lib/python3/dist-packages/odoo/api.py", line 699, in call_kw
76.     return call_kw_multi(method, model, args, kwargs)
77.   File "/usr/lib/python3/dist-packages/odoo/api.py", line 690, in call_kw_multi
78.     result = method(recs, *args, **kwargs)
79.   File "<decorator-gen-48>", line 2, in button_immediate_upgrade
80.   File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 72, in check_and_log
81.     return method(self, *args, **kwargs)
82.   File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 618, in button_immediate_upgrade
83.     return self._button_immediate_function(type(self).button_upgrade)
84.   File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 552, in _button_immediate_function
85.     modules.registry.Registry.new(self._cr.dbname, update_module=True)
86.   File "/usr/lib/python3/dist-packages/odoo/modules/registry.py", line 85, in new
87.     odoo.modules.load_modules(registry._db, force_demo, status, update_module)
88.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 376, in load_modules
89.     force, status, report, loaded_modules, update_module, models_to_check)
90.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 274, in load_marked_modules
91.     perform_checks=perform_checks, models_to_check=models_to_check
92.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 181, in load_module_graph
93.     _load_data(cr, module_name, idref, mode, kind='data')
94.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 95, in _load_data
95.     tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
96.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 792, in convert_file
97.     convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
98.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 853, in convert_xml_import
99.     obj.parse(doc.getroot(), mode=mode)
100.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 742, in parse
101.     self.parse(rec, mode)
102.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 752, in parse
103.     exc_info[2]
104.   File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 86, in reraise
105.     raise value.with_traceback(tb)
106.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 745, in parse
107.     self._tags[rec.tag](rec, de, mode=mode)
108.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 655, in _tag_record
109.     id = self.env(context=rec_context)['ir.model.data']._update(rec_model, self.module, res, rec_id or False, not self.isnoupdate(data_node), noupdate=self.isnoupdate(data_node), mode=self.mode)
110.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_model.py", line 1488, in _update
111.     record.write(values)
112.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 425, in write
113.     res = super(View, self).write(self._compute_defaults(vals))
114.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3169, in write
115.     field.determine_inverse(records)
116.   File "/usr/lib/python3/dist-packages/odoo/fields.py", line 1092, in determine_inverse
117.     getattr(records, self.inverse)()
118.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 273, in _inverse_arch
119.     view.write(data)
120.   File "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_ui_view.py", line 425, in write
121.     res = super(View, self).write(self._compute_defaults(vals))
122.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3149, in write
123.     self._write(old_vals)
124.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 3320, in _write
125.     self._validate_fields(vals)
126.   File "/usr/lib/python3/dist-packages/odoo/models.py", line 1061, in _validate_fields
127.     raise ValidationError("%s\n\n%s" % (_("Error while validating constraint"), tools.ustr(e)))
128. odoo.tools.convert.ParseError: "Error mientras se validaban las restricciones
129.  
130. Modelo no encontrado: None
131.  
132. Contexto del error:
133. Vista `product_fixed_margin_tree`
134. [view_id: 1453, xml_id: aucst_product_pricing_fix.product_fixed_margin_tree, model: product.template, parent_id: n/a]
135. None" while parsing /mnt/extra-addons/aucst_product_pricing_fix/views/views.xml:18, near
136. <record model="ir.ui.view" id="product_fixed_margin_tree">
137.       <field name="name">product_fixed_margin_tree</field>
138.       <field name="model">product.template</field>
139.       <field name="arch" type="xml">
140.         <field name="standard_price" position="after">
141.           <tree string="Margin Tags">
142.             <field name="name"/>
143.             <!-- <field name="supplier_id"/> -->
144.             <field name="margin"/>
145.             <field name="sequence" invisible="1"/>
146.           </tree>
147.         </field>
148.       </field>
149.     </record>