Error:
Odoo Server Error

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 392, # -*- coding: utf-8 -*-

from odoo import models, fields, api

# class openacademy(models.Model):
#     _name = 'openacademy.openacademy'

#     name = fields.Char()

name = fields.Char(string="Title", required=True)
description = fields.Text()
responsible_id = fields.Many2one('res.users', ondelete='set null', string="Responsible", index=True)
session_ids = fields.One2many('openacademy.session', 'course_id', string="Sessions")

class Session(models.Model):
    _name = 'openacademy.session'
    _description = "OpenAcademy Sessions"
    name = fields.Char(required=True)
    start_date = fields.Date()
    duration = fields.Float(digits=(6, 2), help="Duration in _check_xml
    self.postprocess_and_fields(view.model, view_doc, view.id)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 931, in postprocess_and_fields
    self.raise_view_error(_('Model not found: %(model)s') % dict(model=model), view_id)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 592, in raise_view_error
    raise ValueError(message)
ValueError: Modelo no encontrado: openacademy.course

Contexto del error:
Vista `course.form`
[view_id: 678, xml_id: n/a, model: openacademy.course, parent_id: n/a]

During handling days")
    seats = fields.Integer(string="Number of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 713, in parse
    self._tag_root(de)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 675, in _tag_root
    f(rec)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 578, in _tag_record
    record seats")
    instructor_id = model._load_records([data], self.mode == 'update')
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 4070, in _load_records
    records fields.Many2one('res.partner', string="Instructor")
    course_id = self._load_records_create([data['values'] fields.Many2one('openacademy.course', ondelete='cascade', string="Course", required=True)
    attendee_ids = fields.Many2many('res.partner', string="Attendees")


class Course(models.Model):
        _name='openacademy.course'
        _description="OpenAcademy Courses"

        name = fields.Char(string="Title", required=True)
        description= fields.Text()

        """docstring for data in to_create])
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 148, in _load_records_create
    records = super(View, Course"""
        def __init__(self, arg):
                super(Course, self)._load_records_create(values)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3984, in _load_records_create
    return __init__()
                self.create(values)
  File "", line 2, in create
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 344, in _model_create_multi
    return create(self, arg)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 473, in create
    return super(View, self).create(vals_list)
  File "", line 2, in create
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 344, in _model_create_multi
    return create(self, arg)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3765, in create
    fields[0].determine_inverse(batch_recs)
  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 1096, in determine_inverse
    getattr(records, self.inverse)()
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 299, in _inverse_arch
    view.write(data)
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 51, in write
    return super(View, self).write(vals)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 490, in write
    return super(View, self).write(self._compute_defaults(vals))
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3554, in write
    real_recs._validate_fields(set(vals) - set(inverse_fields))
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 1167, in _validate_fields
    check(self)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 394, in _check_xml
    raise ValidationError("%s\n\n%s" % (_("Error while validating view"), tools.ustr(e)))
odoo.exceptions.ValidationError: ('Error while validating view\n\nModelo no encontrado: openacademy.course\n\nContexto del error:\nVista `course.form`\n[view_id: 678, xml_id: n/a, model: openacademy.course, parent_id: n/a]', None)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 619, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 309, 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 664, in dispatch
    result arg = self._call_function(**self.params)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 345, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/service/model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 338, in checked_call
    result = self.endpoint(*a, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 909, in __call__
    return self.method(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/http.py", line 510, in response_wrap
    response = f(*args, **kw)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1323, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/addons/web/controllers/main.py", line 1311, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 395, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 382, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "", line 2, in button_immediate_install
  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 463, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  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 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 420, in load_modules
    loaded_modules, update_module, models_to_check)
  File "/usr/lib/python3/dist-packages/odoo/modules/loading.py", line 312, 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 222, 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 737, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 804, in convert_xml_import
    obj.parse(doc.getroot())
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 722, in parse
    exc_info[2]
  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 713, in parse
    self._tag_root(de)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 675, in _tag_root
    f(rec)
  File "/usr/lib/python3/dist-packages/odoo/tools/convert.py", line 578, in _tag_record
    record = model._load_records([data], self.mode == 'update')
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 4070, in _load_records
    records = self._load_records_create([data['values'] for data in to_create])
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 148, in _load_records_create
    records = super(View, self)._load_records_create(values)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3984, in _load_records_create
    return self.create(values)
  File "", line 2, in create
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 344, in _model_create_multi
    return create(self, arg)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 473, in create
    return super(View, self).create(vals_list)
  File "", line 2, in create
  File "/usr/lib/python3/dist-packages/odoo/api.py", line 344, in _model_create_multi
    return create(self, arg)
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3765, in create
    fields[0].determine_inverse(batch_recs)
  File "/usr/lib/python3/dist-packages/odoo/fields.py", line 1096, in determine_inverse
    getattr(records, self.inverse)()
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 299, in _inverse_arch
    view.write(data)
  File "/usr/lib/python3/dist-packages/odoo/addons/website/models/ir_ui_view.py", line 51, in write
    return super(View, self).write(vals)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 490, in write
    return super(View, self).write(self._compute_defaults(vals))
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 3554, in write
    real_recs._validate_fields(set(vals) - set(inverse_fields))
  File "/usr/lib/python3/dist-packages/odoo/models.py", line 1167, in _validate_fields
    check(self)
  File "/usr/lib/python3/dist-packages/odoo/addons/base/models/ir_ui_view.py", line 394, in _check_xml
    raise ValidationError("%s\n\n%s" % (_("Error while validating view"), tools.ustr(e)))
odoo.tools.convert.ParseError: "Error while validating view

Modelo no encontrado: openacademy.course

Contexto del error:
Vista `course.form`
[view_id: 678, xml_id: n/a, model: openacademy.course, parent_id: n/a]
None" while parsing /mnt/extra-addons/openacademy/views/openacademy.xml:2, near

    
        course.form
        openacademy.course
        
            
                

                    
                    
                    
                    
                

                    
                        
                            
                            

                        

                        
                        
                            
                            
                        
                        
                            
                                
                            
                            
                                
                                    
                                        
                                        
                                    
                                
                            
                            
                                
                            
                            
                        
                    
            
        
    
    
        course.search
        openacademy.course
        
            
                
                
            
        
    
        
    
        session.form
        openacademy.session
        
            
                
                    
                        
                        
                        
                    
                    
                        
                        
                        
                        
                    
                    
                    
                
            
        
    
    
    
        course.tree
        openacademy.course
        
            
                
                
            
        
    
        
    
        session.tree
        openacademy.session
        
            
                
                
            
        
    
        
        
    
        Courses
        openacademy.course
        tree,form
        
            Create the first course

        
    
    
        Sessions
        openacademy.session
    

    
    
    
    
    
        
    
arg