title: Odoo Server Error when I try to import addon into Odoo
body: <p>I have 3 Addon modules I need to import into my Odoo v11 Enterprise Edition which seats on my Odoo.sh environment. I was able to successfully import two of the modules but I am getting an Odoo Server error message in the third case. THis is the error message I am getting. Has anyone had similiar issues and can offer some help</p>
  
  <pre><code>Error:
  Odoo Server Error
  
  Traceback (most recent call last):
    File "/home/odoo/src/odoo/odoo/models.py", line 1046, in _validate_fields
      check(self)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 342, in _check_xml
      self.postprocess_and_fields(view.model, view_doc, view.id)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 1082, in postprocess_and_fields
      self.raise_view_error("\n".join(msg_lines), view_id)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 519, in raise_view_error
      raise ValueError(message)
  ValueError: Field 'x_studio_over_credit' used in attributes must be present in view but is missing:
   - 'x_studio_over_credit' in attrs="{'invisible': ['|', ('state', 'not in', ['draft']), ('x_studio_over_credit', '!=', False)]}"
   - 'x_studio_over_credit' in attrs="{'invisible': ['|', ('state', 'not in', ['sent']), ('x_studio_over_credit', '!=', False)]}"
  
  Error context:
  View `view.sales.form.extend.one`
  [view_id: 2257, xml_id: n/a, model: sale.order, parent_id: 844]
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 745, in parse
      self._tags[rec.tag](rec, de, mode=mode)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 655, in _tag_record
      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)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_model.py", line 1513, in _update
      record = record.create(values)
    File "/home/odoo/src/enterprise/web_studio/models/studio_mixin.py", line 18, in create
      res = super(StudioMixin, self).create(vals)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 408, in create
      return super(View, self).create(self._compute_defaults(values))
    File "/home/odoo/src/odoo/odoo/models.py", line 3434, in create
      self._fields[key].determine_inverse(record)
    File "/home/odoo/src/odoo/odoo/fields.py", line 1085, in determine_inverse
      getattr(records, self.inverse)()
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 273, in _inverse_arch
      view.write(data)
    File "/home/odoo/src/enterprise/web_studio/models/studio_mixin.py", line 27, in write
      res = super(StudioMixin, self).write(vals)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 424, in write
      return super(View, self).write(self._compute_defaults(vals))
    File "/home/odoo/src/odoo/odoo/models.py", line 3138, in write
      self._write(old_vals)
    File "/home/odoo/src/odoo/odoo/models.py", line 3309, in _write
      self._validate_fields(vals)
    File "/home/odoo/src/odoo/odoo/models.py", line 1050, in _validate_fields
      raise ValidationError("%s\n\n%s" % (_("Error while validating constraint"), tools.ustr(e)))
  odoo.exceptions.ValidationError: ('Error while validating constraint\n\nField \'x_studio_over_credit\' used in attributes must be present in view but is missing:\n - \'x_studio_over_credit\' in attrs="{\'invisible\': [\'|\', (\'state\', \'not in\', [\'draft\']), (\'x_studio_over_credit\', \'!=\', False)]}"\n - \'x_studio_over_credit\' in attrs="{\'invisible\': [\'|\', (\'state\', \'not in\', [\'sent\']), (\'x_studio_over_credit\', \'!=\', False)]}"\n\nError context:\nView `view.sales.form.extend.one`\n[view_id: 2257, xml_id: n/a, model: sale.order, parent_id: 844]', None)
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
    File "/home/odoo/src/odoo/odoo/http.py", line 653, in _handle_exception
      return super(JsonRequest, self)._handle_exception(exception)
    File "/home/odoo/src/odoo/odoo/http.py", line 312, in _handle_exception
      raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
    File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 87, in reraise
      raise value
    File "/home/odoo/src/odoo/odoo/http.py", line 695, in dispatch
      result = self._call_function(**self.params)
    File "/home/odoo/src/odoo/odoo/http.py", line 344, in _call_function
      return checked_call(self.db, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/service/model.py", line 97, in wrapper
      return f(dbname, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/http.py", line 337, in checked_call
      result = self.endpoint(*a, **kw)
    File "/home/odoo/src/odoo/odoo/http.py", line 939, in __call__
      return self.method(*args, **kw)
    File "/home/odoo/src/odoo/odoo/http.py", line 517, in response_wrap
      response = f(*args, **kw)
    File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 938, in call_button
      action = self._call_kw(model, method, args, {})
    File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 926, in _call_kw
      return call_kw(request.env[model], method, args, kwargs)
    File "/home/odoo/src/odoo/odoo/api.py", line 699, in call_kw
      return call_kw_multi(method, model, args, kwargs)
    File "/home/odoo/src/odoo/odoo/api.py", line 690, in call_kw_multi
      result = method(recs, *args, **kwargs)
    File "&lt;decorator-gen-42&gt;", line 2, in button_immediate_install
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 72, in check_and_log
      return method(self, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 450, in button_immediate_install
      return self._button_immediate_function(type(self).button_install)
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 552, in _button_immediate_function
      modules.registry.Registry.new(self._cr.dbname, update_module=True)
    File "/home/odoo/src/odoo/odoo/modules/registry.py", line 85, in new
      odoo.modules.load_modules(registry._db, force_demo, status, update_module)
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 380, in load_modules
      loaded_modules, update_module, models_to_check)
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 274, in load_marked_modules
      perform_checks=perform_checks, models_to_check=models_to_check
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 181, in load_module_graph
      _load_data(cr, module_name, idref, mode, kind='data')
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 95, in _load_data
      tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 792, in convert_file
      convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 853, in convert_xml_import
      obj.parse(doc.getroot(), mode=mode)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 752, in parse
      exc_info[2]
    File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 86, in reraise
      raise value.with_traceback(tb)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 745, in parse
      self._tags[rec.tag](rec, de, mode=mode)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 655, in _tag_record
      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)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_model.py", line 1513, in _update
      record = record.create(values)
    File "/home/odoo/src/enterprise/web_studio/models/studio_mixin.py", line 18, in create
      res = super(StudioMixin, self).create(vals)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 408, in create
      return super(View, self).create(self._compute_defaults(values))
    File "/home/odoo/src/odoo/odoo/models.py", line 3434, in create
      self._fields[key].determine_inverse(record)
    File "/home/odoo/src/odoo/odoo/fields.py", line 1085, in determine_inverse
      getattr(records, self.inverse)()
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 273, in _inverse_arch
      view.write(data)
    File "/home/odoo/src/enterprise/web_studio/models/studio_mixin.py", line 27, in write
      res = super(StudioMixin, self).write(vals)
    File "/home/odoo/src/odoo/odoo/addons/base/ir/ir_ui_view.py", line 424, in write
      return super(View, self).write(self._compute_defaults(vals))
    File "/home/odoo/src/odoo/odoo/models.py", line 3138, in write
      self._write(old_vals)
    File "/home/odoo/src/odoo/odoo/models.py", line 3309, in _write
      self._validate_fields(vals)
    File "/home/odoo/src/odoo/odoo/models.py", line 1050, in _validate_fields
      raise ValidationError("%s\n\n%s" % (_("Error while validating constraint"), tools.ustr(e)))
  odoo.tools.convert.ParseError: "Error while validating constraint
  
  Field 'x_studio_over_credit' used in attributes must be present in view but is missing:
   - 'x_studio_over_credit' in attrs="{'invisible': ['|', ('state', 'not in', ['draft']), ('x_studio_over_credit', '!=', False)]}"
   - 'x_studio_over_credit' in attrs="{'invisible': ['|', ('state', 'not in', ['sent']), ('x_studio_over_credit', '!=', False)]}"
  
  Error context:
  View `view.sales.form.extend.one`
  [view_id: 2257, xml_id: n/a, model: sale.order, parent_id: 844]
  None" while parsing /home/odoo/src/odoo/addons/crm_customer_rating/views/views.xml:4, near
  &lt;record id="view_sales_form_extend_1" model="ir.ui.view"&gt;
          &lt;field name="name"&gt;view.sales.form.extend.one&lt;/field&gt;
          &lt;field name="model"&gt;sale.order&lt;/field&gt;
          &lt;field name="inherit_id" ref="sale.view_order_form"/&gt;
          &lt;field name="arch" type="xml"&gt;
  
              &lt;xpath expr="//page[1]" position="after"&gt;
                  &lt;page name="customer_satisfaction" string="Customer Satisfaction"&gt;
                      &lt;group colspan="2" col="2"&gt;
                          &lt;field name="quality_of_products" widget="priority"/&gt;
                          &lt;field name="acc_of_delivery" widget="priority"/&gt;
                          &lt;field name="order_satisfaction" widget="priority"/&gt;
                          &lt;field name="oa_package_rating" widget="priority"/&gt;
                      &lt;/group&gt;
                  &lt;/page&gt;
              &lt;/xpath&gt;
          &lt;/field&gt;
      &lt;/record&gt;
  </code></pre>
  
  <p>This is my XML Code
  
  </p>
  
  <pre><code>&lt;record id="view_sales_form_extend_1" model="ir.ui.view"&gt;
      &lt;field name="name"&gt;view.sales.form.extend.one&lt;/field&gt;
      &lt;field name="model"&gt;sale.order&lt;/field&gt;
      &lt;field name="inherit_id" ref="sale.view_order_form"/&gt;
      &lt;field name="arch" type="xml"&gt;
  
          &lt;xpath expr="//page[1]" position="after"&gt;
              &lt;page name="customer_satisfaction" string="Customer Satisfaction"&gt;
                  &lt;group colspan="2" col="2"&gt;
                      &lt;field name="quality_of_products" widget="priority"/&gt;
                      &lt;field name="acc_of_delivery" widget="priority"/&gt;
                      &lt;field name="order_satisfaction" widget="priority"/&gt;
                      &lt;field name="oa_package_rating" widget="priority"/&gt;
                  &lt;/group&gt;
              &lt;/page&gt;
          &lt;/xpath&gt;
      &lt;/field&gt;
  &lt;/record&gt;
  
  &lt;record id="view_sales_filter_extend" model="ir.ui.view"&gt;
      &lt;field name="name"&gt;view.sales.filter.extend.one&lt;/field&gt;
      &lt;field name="model"&gt;sale.order&lt;/field&gt;
      &lt;field name="inherit_id" ref="sale.view_sales_order_filter"/&gt;
      &lt;field name="arch" type="xml"&gt;
          &lt;xpath expr="//filter[@name='customer']" position="after"&gt;
              &lt;separator/&gt;
              &lt;filter string="Quality of Products" name="quality_of_products" domain="[]" context="{'group_by':'quality_of_products'}"/&gt;
              &lt;filter string="Accuracy of Delivery" name="acc_of_delivery" domain="[]" context="{'group_by':'acc_of_delivery'}"/&gt;
              &lt;filter string="Order Satisfaction" name="order_satisfaction" domain="[]" context="{'group_by':'order_satisfaction'}"/&gt;
              &lt;filter string="Overall Rating of Package" name="oa_package_rating" domain="[]" context="{'group_by':'oa_package_rating'}"/&gt;
          &lt;/xpath&gt;
      &lt;/field&gt;
  &lt;/record&gt;
  
  &lt;record id="res_partner_customer_preferences" model="ir.ui.view"&gt;
      &lt;field name="name"&gt;res.partner.customer.preferences&lt;/field&gt;
      &lt;field name="model"&gt;res.partner&lt;/field&gt;
      &lt;field name="inherit_id" ref="base.view_partner_form" /&gt;
      &lt;field name="arch" type="xml"&gt;
           &lt;xpath expr="//page[@name='internal_notes']" position="after"&gt;
              &lt;page name="customer_preferences" string="Preferences"&gt;
                  &lt;group colspan="2" col="2"&gt;
                      &lt;field name="likes"/&gt;
                      &lt;field name="dislikes"/&gt;
                      &lt;field name="preferred_supply_time"/&gt;
                      &lt;field name="peculiarity_of_client"/&gt;
                  &lt;/group&gt;
              &lt;/page&gt;
          &lt;/xpath&gt;
  
      &lt;/field&gt;
  &lt;/record&gt;
  </code></pre>
  
  <p></p>
  
  <p>this is the new error i am getting when I changed the code in the view.xml to </p>
  
  <pre><code>Error:
  Odoo Server Error
  
  Traceback (most recent call last):
    File "/home/odoo/src/odoo/odoo/http.py", line 653, in _handle_exception
      return super(JsonRequest, self)._handle_exception(exception)
    File "/home/odoo/src/odoo/odoo/http.py", line 312, in _handle_exception
      raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
    File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 87, in reraise
      raise value
    File "/home/odoo/src/odoo/odoo/http.py", line 695, in dispatch
      result = self._call_function(**self.params)
    File "/home/odoo/src/odoo/odoo/http.py", line 344, in _call_function
      return checked_call(self.db, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/service/model.py", line 97, in wrapper
      return f(dbname, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/http.py", line 337, in checked_call
      result = self.endpoint(*a, **kw)
    File "/home/odoo/src/odoo/odoo/http.py", line 939, in __call__
      return self.method(*args, **kw)
    File "/home/odoo/src/odoo/odoo/http.py", line 517, in response_wrap
      response = f(*args, **kw)
    File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 938, in call_button
      action = self._call_kw(model, method, args, {})
    File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 926, in _call_kw
      return call_kw(request.env[model], method, args, kwargs)
    File "/home/odoo/src/odoo/odoo/api.py", line 699, in call_kw
      return call_kw_multi(method, model, args, kwargs)
    File "/home/odoo/src/odoo/odoo/api.py", line 690, in call_kw_multi
      result = method(recs, *args, **kwargs)
    File "&lt;decorator-gen-42&gt;", line 2, in button_immediate_install
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 72, in check_and_log
      return method(self, *args, **kwargs)
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 450, in button_immediate_install
      return self._button_immediate_function(type(self).button_install)
    File "/home/odoo/src/odoo/odoo/addons/base/module/module.py", line 552, in _button_immediate_function
      modules.registry.Registry.new(self._cr.dbname, update_module=True)
    File "/home/odoo/src/odoo/odoo/modules/registry.py", line 85, in new
      odoo.modules.load_modules(registry._db, force_demo, status, update_module)
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 380, in load_modules
      loaded_modules, update_module, models_to_check)
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 274, in load_marked_modules
      perform_checks=perform_checks, models_to_check=models_to_check
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 181, in load_module_graph
      _load_data(cr, module_name, idref, mode, kind='data')
    File "/home/odoo/src/odoo/odoo/modules/loading.py", line 95, in _load_data
      tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 792, in convert_file
      convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
    File "/home/odoo/src/odoo/odoo/tools/convert.py", line 836, in convert_xml_import
      doc = etree.parse(xmlfile)
    File "src/lxml/etree.pyx", line 3426, in lxml.etree.parse
    File "src/lxml/parser.pxi", line 1861, in lxml.etree._parseDocument
    File "src/lxml/parser.pxi", line 1881, in lxml.etree._parseFilelikeDocument
    File "src/lxml/parser.pxi", line 1776, in lxml.etree._parseDocFromFilelike
    File "src/lxml/parser.pxi", line 1187, in lxml.etree._BaseParser._parseDocFromFilelike
    File "src/lxml/parser.pxi", line 601, in lxml.etree._ParserContext._handleParseResultDoc
    File "src/lxml/parser.pxi", line 711, in lxml.etree._handleParseResult
    File "src/lxml/parser.pxi", line 640, in lxml.etree._raiseParseError
    File "/home/odoo/src/enterprise/crm_customer_rating/views/views.xml", line 10
  lxml.etree.XMLSyntaxError: attributes construct error, line 10, column 82
  </code></pre>