Hey Community!

I hope you are all well.

I'm having trouble installing an addon for the Helpdesk module. 

When I installed another addon for Contacts, I had no trouble at all. What am I doing wrong?

The error code: 

Error:
Odoo Server Error

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/tools/cache.py", line 85, in lookup
    r = d[key]
  File "/usr/lib/python3/dist-packages/odoo/tools/func.py", line 69, in wrapper
    return func(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/tools/lru.py", line 44, in __getitem__
    a = self.d[obj].me
KeyError: ('ir.model.data', <function IrModelData.xmlid_lookup at 0x7fa8277cf670>, 'helpdesk.helpdesk_tickets_view_form')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 712, in parse
    self._tag_root(de)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 674, in _tag_root
    f(rec)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 561, in _tag_record
    f_val = self.id_get(f_ref)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 657, in id_get
    res = self.model_id_get(id_str, raise_if_not_found)
  File "/usr/lib/python3/dist-packages/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 "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_model.py", line 1681, in xmlid_to_res_model_res_id
    return self.xmlid_lookup(xmlid)[1:3]
  File "<decorator-gen-25>", line 2, in xmlid_lookup
  File "/usr/lib/python3/dist-packages/odoo/tools/cache.py", line 90, in lookup
    value = d[key] = self.method(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_model.py", line 1670, in xmlid_lookup
    raise ValueError('External ID not found in the system: %s' % xmlid)
ValueError: External ID not found in the system: helpdesk.helpdesk_tickets_view_form

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 624, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 14, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 669, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 350, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 339, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 915, in __call__
    return self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1326, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1314, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 387, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 374, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-66>", line 2, in button_immediate_upgrade
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 72, in check_and_log
    return method(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 634, in button_immediate_upgrade
    return self._button_immediate_function(type(self).button_upgrade)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_module.py", line 573, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/usr/lib/python3/dist-packages/odoo/modules/registry.py", line 86, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 417, in load_modules
    processed_modules += load_marked_modules(cr, graph,
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 313, in load_marked_modules
    loaded, processed = load_module_graph(
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 225, in load_module_graph
    load_data(cr, idref, mode, kind='data', package=package, report=report)
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 68, in load_data
    tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind, report)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 736, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 803, in convert_xml_import
    obj.parse(doc.getroot())
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 715, in parse
    pycompat.reraise(
  File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 13, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 712, in parse
    self._tag_root(de)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 674, in _tag_root
    f(rec)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 561, in _tag_record
    f_val = self.id_get(f_ref)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 657, in id_get
    res = self.model_id_get(id_str, raise_if_not_found)
  File "/usr/lib/python3/dist-packages/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 "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_model.py", line 1681, in xmlid_to_res_model_res_id
    return self.xmlid_lookup(xmlid)[1:3]
  File "<decorator-gen-25>", line 2, in xmlid_lookup
  File "/usr/lib/python3/dist-packages/odoo/tools/cache.py", line 90, in lookup
    value = d[key] = self.method(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_model.py", line 1670, in xmlid_lookup
    raise ValueError('External ID not found in the system: %s' % xmlid)
odoo.tools.convert.ParseError: "External ID not found in the system: helpdesk.helpdesk_tickets_view_form" while parsing /opt/odoo_custom_addons/helpdesk_addon/views/helpdesk_addon.xml:3, near
<odoo>

  <!-- Helpdesk Addon Form View -->
  <record id="helpdesk_addon_form_view" model="ir.ui.view">
    <field name="name">view.helpdesk.addon.form</field>
    <field name="model">helpdesk.ticket</field>
    <field name="inherit_id" ref="helpdesk.helpdesk_tickets_view_form"/>
    <field name="arch" type="xml">
      <field name="partner_id" position="before">
        <field name="test_field"/>
      </field>
    </field>
  </record>

  <!-- Helpdesk Addon Tree View -->

  <record id="helpdesk_addon_tree_view" model="ir.ui.view">
    <field name="name">view.helpdesk.addon.tree</field>
    <field name="model">helpdesk.ticket</field>
    <field name="inherit_id" ref="helpdesk.helpdesk_tickets_view_tree"/>
    <field name="arch" type="xml">
      <field name="partner_id" position="before">
        <field name="test_field"/>
      </field>
    </field>
  </record>

  <!-- Helpdesk Addon Search View -->

  <record id="helpdesk_addon_search_view" model="ir.ui.view">
    <field name="name">view.helpdesk.addon.search</field>
    <field name="model"/>
    <field name="arch" type="xml">
      <search/>
    </field>
  </record>

  <!-- Helpdesk Addon Action -->

  <record id="helpdesk_addon_view_action" model="ir.actions.act_window">
    <field name="name">Helpdesk Addon</field>
    <field name="res_model"/>
    <field name="type">ir.actions.act_window</field>
    <field name="view_mode">tree,form</field>
    <field name="help" type="html">
      <p class="oe_view_nonecontent_create">
        Create a ...
      </p>
      <p>
        ...
      </p>
    </field>
  </record>
</odoo>

My Code:

<?xml version="1.0" encoding="utf-8"?>
<odoo>
  <!-- Helpdesk Addon Form View -->
  <record id="helpdesk_addon_form_view" model="ir.ui.view">
    <field name="name">view.helpdesk.addon.form</field>
    <field name="model">helpdesk.ticket</field>
    <field name="inherit_id" ref="helpdesk.helpdesk_tickets_view_form"/>
    <field name="arch" type="xml">
      <field name="partner_id" position="before">
        <field name="test_field"/>
      </field>
    </field>
  </record>
  <!-- Helpdesk Addon Tree View -->
  <record id="helpdesk_addon_tree_view" model="ir.ui.view">
    <field name="name">view.helpdesk.addon.tree</field>
    <field name="model">helpdesk.ticket</field>
    <field name="inherit_id" ref="helpdesk.helpdesk_tickets_view_tree"/>
    <field name="arch" type="xml">
      <field name="partner_id" position="before">
        <field name="test_field"/>
      </field>
    </field>
  </record>
 

 </odoo>

Greetings from Dortmund.