Odoo Server Error

Traceback (most recent call last):
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 619, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 309, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/opt/odoo13b/odoo13b-server/odoo/tools/pycompat.py", line 14, in reraise
    raise value
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 664, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 345, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo13b/odoo13b-server/odoo/service/model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 338, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 910, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo13b/odoo13b-server/odoo/http.py", line 510, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo13b/odoo13b-server/addons/web/controllers/main.py", line 1326, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/opt/odoo13b/odoo13b-server/addons/web/controllers/main.py", line 1314, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo13b/odoo13b-server/odoo/api.py", line 387, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/opt/odoo13b/odoo13b-server/odoo/api.py", line 374, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-65>", line 2, in button_immediate_upgrade
  File "/opt/odoo13b/odoo13b-server/odoo/addons/base/models/ir_module.py", line 72, in check_and_log
    return method(self, *args, **kwargs)
  File "/opt/odoo13b/odoo13b-server/odoo/addons/base/models/ir_module.py", line 634, in button_immediate_upgrade
    return self._button_immediate_function(type(self).button_upgrade)
  File "/opt/odoo13b/odoo13b-server/odoo/addons/base/models/ir_module.py", line 573, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/opt/odoo13b/odoo13b-server/odoo/modules/registry.py", line 86, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/opt/odoo13b/odoo13b-server/odoo/modules/loading.py", line 419, in load_modules
    force, status, report, loaded_modules, update_module, models_to_check)
  File "/opt/odoo13b/odoo13b-server/odoo/modules/loading.py", line 315, in load_marked_modules
    perform_checks=perform_checks, models_to_check=models_to_check
  File "/opt/odoo13b/odoo13b-server/odoo/modules/loading.py", line 225, in load_module_graph
    load_data(cr, idref, mode, kind='data', package=package, report=report)
  File "/opt/odoo13b/odoo13b-server/odoo/modules/loading.py", line 68, in load_data
    tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind, report)
  File "/opt/odoo13b/odoo13b-server/odoo/tools/convert.py", line 736, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/opt/odoo13b/odoo13b-server/odoo/tools/convert.py", line 786, in convert_xml_import
    relaxng.assert_(doc)
  File "src/lxml/etree.pyx", line 3542, in lxml.etree._Validator.assert_
AssertionError: Element odoo has extra content: data, line 3