Hi there! 

I'm trying to install the Proyect management app on Odoo V13 but I get the following traceback. I'm a complete novice in Odoo so I don't understand what is wrong. What should I do? Thanks!

Odoo Server Error

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/tools/cache.py", line 85, in lookup
    r = d[key]
  File "/home/odoo/src/odoo/odoo/tools/func.py", line 69, in wrapper
    return func(self, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/tools/lru.py", line 44, in __getitem__
    a = self.d[obj].me
KeyError: ('ir.model.data', <function IrModelData.xmlid_lookup at 0x7f3b4099f048>, 'base.user_admin')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/tools/safe_eval.py", line 354, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
  File "", line 1, in <module>
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 657, in id_get
    res = self.model_id_get(id_str, raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 663, in model_id_get
    return self.env['ir.model.data'].xmlid_to_res_model_res_id(id_str, raise_if_not_found=raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1685, in xmlid_to_res_model_res_id
    return self.xmlid_lookup(xmlid)[1:3]
  File "<decorator-gen-25>", line 2, in xmlid_lookup
  File "/home/odoo/src/odoo/odoo/tools/cache.py", line 90, in lookup
    value = d[key] = self.method(*args, **kwargs)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1674, in xmlid_lookup
    raise ValueError('External ID not found in the system: %s' % xmlid)
ValueError: External ID not found in the system: base.user_admin

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 712, in parse
    self._tag_root(de)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 674, in _tag_root
    f(rec)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 563, in _tag_record
    f_val = _eval_xml(self, field, env)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 117, in _eval_xml
    return safe_eval(a_eval, idref2)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 32, in <lambda>
    safe_eval = lambda expr, ctx={}: s_eval(expr, ctx, nocopy=True)
  File "/home/odoo/src/odoo/odoo/tools/safe_eval.py", line 377, in safe_eval
    pycompat.reraise(ValueError, ValueError('%s: "%s" while evaluating\n%r' % (ustr(type(e)), ustr(e), expr)), exc_info[2])
  File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 13, in reraise
    raise value.with_traceback(tb)
  File "/home/odoo/src/odoo/odoo/tools/safe_eval.py", line 354, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
  File "", line 1, in <module>
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 657, in id_get
    res = self.model_id_get(id_str, raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 663, in model_id_get
    return self.env['ir.model.data'].xmlid_to_res_model_res_id(id_str, raise_if_not_found=raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1685, in xmlid_to_res_model_res_id
    return self.xmlid_lookup(xmlid)[1:3]
  File "<decorator-gen-25>", line 2, in xmlid_lookup
  File "/home/odoo/src/odoo/odoo/tools/cache.py", line 90, in lookup
    value = d[key] = self.method(*args, **kwargs)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1674, in xmlid_lookup
    raise ValueError('External ID not found in the system: %s' % xmlid)
ValueError: <class 'ValueError'>: "External ID not found in the system: base.user_admin" while evaluating
"[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/http.py", line 624, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/odoo/src/odoo/odoo/http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 14, in reraise
    raise value
  File "/home/odoo/src/odoo/odoo/http.py", line 669, in dispatch
    result = self._call_function(**self.params)
  File "/home/odoo/src/odoo/odoo/http.py", line 350, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/http.py", line 339, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo/src/odoo/odoo/http.py", line 915, in __call__
    return self.method(*args, **kw)
  File "/home/odoo/src/odoo/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 1331, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 1319, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/odoo/src/odoo/odoo/api.py", line 387, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/home/odoo/src/odoo/odoo/api.py", line 374, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-60>", line 2, in button_immediate_install
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_module.py", line 72, in check_and_log
    return method(self, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_module.py", line 463, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_module.py", line 573, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/home/odoo/src/odoo/odoo/modules/registry.py", line 86, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 423, in load_modules
    loaded_modules, update_module, models_to_check)
  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 315, in load_marked_modules
    perform_checks=perform_checks, models_to_check=models_to_check
  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 225, in load_module_graph
    load_data(cr, idref, mode, kind='data', package=package, report=report)
  File "/home/odoo/src/odoo/odoo/modules/loading.py", line 68, in load_data
    tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind, report)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 736, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 803, in convert_xml_import
    obj.parse(doc.getroot())
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 721, in parse
    exc_info[2]
  File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 13, in reraise
    raise value.with_traceback(tb)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 712, in parse
    self._tag_root(de)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 674, in _tag_root
    f(rec)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 563, in _tag_record
    f_val = _eval_xml(self, field, env)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 117, in _eval_xml
    return safe_eval(a_eval, idref2)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 32, in <lambda>
    safe_eval = lambda expr, ctx={}: s_eval(expr, ctx, nocopy=True)
  File "/home/odoo/src/odoo/odoo/tools/safe_eval.py", line 377, in safe_eval
    pycompat.reraise(ValueError, ValueError('%s: "%s" while evaluating\n%r' % (ustr(type(e)), ustr(e), expr)), exc_info[2])
  File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 13, in reraise
    raise value.with_traceback(tb)
  File "/home/odoo/src/odoo/odoo/tools/safe_eval.py", line 354, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
  File "", line 1, in <module>
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 657, in id_get
    res = self.model_id_get(id_str, raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/tools/convert.py", line 663, in model_id_get
    return self.env['ir.model.data'].xmlid_to_res_model_res_id(id_str, raise_if_not_found=raise_if_not_found)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1685, in xmlid_to_res_model_res_id
    return self.xmlid_lookup(xmlid)[1:3]
  File "<decorator-gen-25>", line 2, in xmlid_lookup
  File "/home/odoo/src/odoo/odoo/tools/cache.py", line 90, in lookup
    value = d[key] = self.method(*args, **kwargs)
  File "/home/odoo/src/odoo/odoo/addons/base/models/ir_model.py", line 1674, in xmlid_lookup
    raise ValueError('External ID not found in the system: %s' % xmlid)
odoo.tools.convert.ParseError: "<class 'ValueError'>: "External ID not found in the system: base.user_admin" while evaluating
"[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"" while parsing /home/odoo/src/odoo/addons/project/security/project_security.xml:2, near
<odoo>

    <record id="base.module_category_operations_project" model="ir.module.category">
        <field name="description">Helps you manage your projects and tasks by tracking them, generating plannings, etc...</field>
        <field name="sequence">3</field>
    </record>

    <record id="group_project_user" model="res.groups">
        <field name="name">User</field>
        <field name="implied_ids" eval="[(4, ref('base.group_user'))]"/>
        <field name="category_id" ref="base.module_category_operations_project"/>
    </record>

    <record id="group_project_manager" model="res.groups">
        <field name="name">Administrator</field>
        <field name="category_id" ref="base.module_category_operations_project"/>
        <field name="implied_ids" eval="[(4, ref('group_project_user'))]"/>
        <field name="users" eval="[(4, ref('base.user_root')), (4, ref('base.user_admin'))]"/>
    </record>

    <record id="group_subtask_project" model="res.groups">
        <field name="name">Use Subtasks</field>
        <field name="category_id" ref="base.module_category_hidden"/>
    </record>

    <record id="group_project_rating" model="res.groups">
        <field name="name">Use Rating on Project</field>
        <field name="category_id" ref="base.module_category_hidden"/>
    </record>

<data noupdate="1">
    <record id="base.default_user" model="res.users">
        <field name="groups_id" eval="[(4,ref('project.group_project_manager'))]"/>
    </record>

    <record model="ir.rule" id="project_comp_rule">
        <field name="name">Project: multi-company</field>
        <field name="model_id" ref="model_project_project"/>
        <field name="global" eval="True"/>
        <field name="domain_force">[('company_id', 'in', company_ids)]</field>
    </record>

    <record model="ir.rule" id="project_project_manager_rule">
        <field name="name">Project: project manager: see all</field>
        <field name="model_id" ref="model_project_project"/>
        <field name="domain_force">[(1, '=', 1)]</field>
        <field name="groups" eval="[(4,ref('project.group_project_manager'))]"/>
    </record>

    <record model="ir.rule" id="project_public_members_rule">
        <field name="name">Project: employees: following required for follower-only projects</field>
        <field name="model_id" ref="model_project_project"/>
        <field name="domain_force">['|',
                                        ('privacy_visibility', '!=', 'followers'),
                                        '|','|',
                                            ('message_partner_ids', 'in', [user.partner_id.id]),
                                            ('message_channel_ids', 'in', user.partner_id.channel_ids.ids),
                                            ('task_ids.message_partner_ids', 'in', [user.partner_id.id]),
                                    ]</field>
        <field name="groups" eval="[(4, ref('base.group_user'))]"/>
    </record>

    <record model="ir.rule" id="task_comp_rule">
        <field name="name">Project/Task: multi-company</field>
        <field name="model_id" ref="model_project_task"/>
        <field name="global" eval="True"/>
        <field name="domain_force">[('company_id', 'in', company_ids)]</field>
    </record>

    <record model="ir.rule" id="task_visibility_rule">
        <field name="name">Project/Task: employees: follow required for follower-only projects</field>
        <field name="model_id" ref="model_project_task"/>
        <field name="domain_force">[
        '|',
            ('project_id.privacy_visibility', '!=', 'followers'),
            '|',
                ('project_id.message_partner_ids', 'in', [user.partner_id.id]),
                '|',
                    ('message_partner_ids', 'in', [user.partner_id.id]),
                    # to subscribe check access to the record, follower is not enough at creation
                    ('user_id', '=', user.id)
        ]</field>
        <field name="groups" eval="[(4,ref('base.group_user'))]"/>
    </record>

    <record model="ir.rule" id="project_manager_all_project_tasks_rule">
        <field name="name">Project/Task: project manager: see all</field>
        <field name="model_id" ref="model_project_task"/>
        <field name="domain_force">[(1, '=', 1)]</field>
        <field name="groups" eval="[(4,ref('project.group_project_manager'))]"/>
    </record>

    <record model="ir.rule" id="report_project_task_user_report_comp_rule">
        <field name="name">Task Analysis multi-company</field>
        <field name="model_id" ref="model_report_project_task_user"/>
        <field name="global" eval="True"/>
        <field name="domain_force">[('company_id', 'in', company_ids)]</field>
    </record>

     <!-- Portal -->
    <record id="project_project_rule_portal" model="ir.rule">
        <field name="name">Project: portal users: portal and following</field>
        <field name="model_id" ref="project.model_project_project"/>
        <field name="domain_force">[
            '&amp;',
                ('privacy_visibility', '=', 'portal'),
                ('message_partner_ids', 'child_of', [user.partner_id.commercial_partner_id.id]),
        ]</field>
        <field name="groups" eval="[(4, ref('base.group_portal'))]"/>
    </record>

    <record id="project_task_rule_portal" model="ir.rule">
        <field name="name">Project/Task: portal users: (portal and following project) or (portal and following task)</field>
        <field name="model_id" ref="project.model_project_task"/>
        <field name="domain_force">[
        '|',
            '&amp;',
                ('project_id.privacy_visibility', '=', 'portal'),
                ('project_id.message_partner_ids', 'child_of', [user.partner_id.commercial_partner_id.id]),
            '&amp;',
                ('project_id.privacy_visibility', '=', 'portal'),
                ('message_partner_ids', 'child_of', [user.partner_id.commercial_partner_id.id]),
        ]</field>
        <field name="groups" eval="[(4, ref('base.group_portal'))]"/>
    </record>

</data>
</odoo>