1. Error:
2. Odoo Server Error
3.  
4. Traceback (most recent call last):
5.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 624, in _handle_exception
6.     return super(JsonRequest, self)._handle_exception(exception)
7.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 310, in _handle_exception
8.     raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
9.   File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 14, in reraise
10.     raise value
11.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 669, in dispatch
12.     result = self._call_function(**self.params)
13.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 350, in _call_function
14.     return checked_call(self.db, *args, **kwargs)
15.   File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 94, in wrapper
16.     return f(dbname, *args, **kwargs)
17.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 339, in checked_call
18.     result = self.endpoint(*a, **kw)
19.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 915, in __call__
20.     return self.method(*args, **kw)
21.   File "/usr/lib/python3/dist-packages/odoo/http.py", line 515, in response_wrap
22.     response = f(*args, **kw)
23.   File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1346, in call_button
24.     action = self._call_kw(model, method, args, kwargs)
25.   File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1334, in _call_kw
26.     return call_kw(request.env[model], method, args, kwargs)
27.   File "/usr/lib/python3/dist-packages/odoo/api.py", line 390, in call_kw
28.     result = _call_kw_multi(method, model, args, kwargs)
29.   File "/usr/lib/python3/dist-packages/odoo/api.py", line 377, in _call_kw_multi
30.     result = method(recs, *args, **kwargs)
31.   File "<decorator-gen-60>", line 2, in button_immediate_install
32.   File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 73, in check_and_log
33.     return method(self, *args, **kwargs)
34.   File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 464, in button_immediate_install
35.     return self._button_immediate_function(type(self).button_install)
36.   File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 574, in _button_immediate_function
37.     modules.registry.Registry.new(self._cr.dbname, update_module=True)
38.   File "/usr/lib/python3/dist-packages/odoo/modules/registry.py", line 86, in new
39.     odoo.modules.load_modules(registry._db, force_demo, status, update_module)
40.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 428, in load_modules
41.     loaded_modules, update_module, models_to_check)
42.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 315, in load_marked_modules
43.     perform_checks=perform_checks, models_to_check=models_to_check
44.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 225, in load_module_graph
45.     load_data(cr, idref, mode, kind='data', package=package, report=report)
46.   File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 68, in load_data
47.     tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind, report)
48.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 736, in convert_file
49.     convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
50.   File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 786, in convert_xml_import
51.     relaxng.assert_(doc)
52.   File "src/lxml/etree.pyx", line 3547, in lxml.etree._Validator.assert_
53. AssertionError: Element odoo has extra content: data, line 3