Now I'm getting server error while installing/updating new module from app.

Error:
Odoo Server Error

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 744, in parse
    self._tags[rec.tag](rec, de, mode=mode)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 654, 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 "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_model.py", line 1496, in _update
    record = record.create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/sales_team/models/res_users.py", line 17, in create
    user = super(ResUsers, self).create(vals)
  File "/usr/lib/python3/dist-packages/odoo/addons/note/models/res_users.py", line 14, in create
    user = super(Users, self).create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/auth_signup/models/res_users.py", line 154, in create
    user = super(ResUsers, self).create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/mail/models/res_users.py", line 55, in create
    raise exceptions.RedirectWarning(msg, action.id, _('Go to the configuration panel'))
odoo.exceptions.RedirectWarning: ('You cannot create a new user from here.\n To create new user please go to configuration panel.', 65, 'Go to the configuration panel')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 651, 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 87, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 693, in dispatch
    result = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 342, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 335, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 937, 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 938, in call_button
    action = self._call_kw(model, method, args, {})
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-42>", line 2, in button_immediate_install
  File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 72, in check_and_log
    return method(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 450, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/module/module.py", line 552, 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 85, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 380, in load_modules
    loaded_modules, update_module, models_to_check)
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 274, in load_marked_modules
    perform_checks=perform_checks, models_to_check=models_to_check
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 181, in load_module_graph
    _load_data(cr, module_name, idref, mode, kind='data')
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 95, in _load_data
    tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 791, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 852, in convert_xml_import
    obj.parse(doc.getroot(), mode=mode)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 741, in parse
    self.parse(rec, mode)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 751, in parse
    exc_info[2]
  File "/usr/lib/python3/dist-packages/odoo/tools/pycompat.py", line 86, in reraise
    raise value.with_traceback(tb)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 744, in parse
    self._tags[rec.tag](rec, de, mode=mode)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 654, 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 "/usr/lib/python3/dist-packages/odoo/addons/base/ir/ir_model.py", line 1496, in _update
    record = record.create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/sales_team/models/res_users.py", line 17, in create
    user = super(ResUsers, self).create(vals)
  File "/usr/lib/python3/dist-packages/odoo/addons/note/models/res_users.py", line 14, in create
    user = super(Users, self).create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/auth_signup/models/res_users.py", line 154, in create
    user = super(ResUsers, self).create(values)
  File "/usr/lib/python3/dist-packages/odoo/addons/mail/models/res_users.py", line 55, in create
    raise exceptions.RedirectWarning(msg, action.id, _('Go to the configuration panel'))
odoo.tools.convert.ParseError: "You cannot create a new user from here.
 To create new user please go to configuration panel.
65
Go to the configuration panel" while parsing /usr/lib/python3/dist-packages/odoo/addons/sales_team/security/sales_team_security.xml:44, near
<record id="base.default_user" model="res.users">
            <field name="groups_id" eval="[(4,ref('sales_team.group_sale_manager'))]"/>
        </record>