Impacted versions: Odoo 12

Current behavior: Odoo fails to load server-wide module base

Expected behavior: Odoo load server-wide module 'base'

Hi,
while restarting odoo service from pycharm I have got errors starting from loading module 'web'.
It says an api.onchange call went wrong cause it needs 1 argument instead of 3 ones specified in file ir_model.py.
I've just copied addons folders from official repository to addons path.

postgresql service is running and web module.
the command launched form IDE is odoo-bin -c /home/user/Odoo/odoo-12.0/odoo.conf --dev=reload -u /home/user/Odoo/odoo-12.0/addons

I'm gonna report below my conf file and entire error.
ODOO.CONF FILE

[options]
; This is the password that allows database operations:
; admin_passwd = admin
db_host = localhost
db_port = 5432
db_user = odoo
db_password = odoo
addons_path = /home/odoovm/Odoo/odoo-12.0/addons,/home/odoovm/Odoo/odoo-12.0/master-app
xmlrpc_port = 8099

[logging]
; logfile = /home/odoovm/Odoo/odoo-12.0/logs/openerp-server.log
; logrotate = False
log-level = debug
; log-db = False
; syslog = False

LOGS

2020-06-30 14:16:30,410 6134 INFO ? odoo: Odoo version 12.0
2020-06-30 14:16:30,411 6134 INFO ? odoo: Using configuration file at /home/odoovm/Odoo/odoo-12.0/odoo.conf
2020-06-30 14:16:30,411 6134 INFO ? odoo: addons paths: ['/home/odoovm/.local/share/Odoo/addons/12.0', '/home/odoovm/Odoo/odoo-12.0/addons', '/home/odoovm/Odoo/odoo-12.0/master-app', '/home/odoovm/Odoo/odoo-12.0/odoo/addons']
2020-06-30 14:16:30,411 6134 INFO ? odoo: database: odoo@localhost:5432
2020-06-30 14:16:30,432 6134 CRITICAL ? odoo.modules.module: Couldn't load module base
2020-06-30 14:16:30,432 6134 CRITICAL ? odoo.modules.module: onchange() takes 1 positional argument but 3 were given
2020-06-30 14:16:30,432 6134 ERROR ? odoo.service.server: Failed to load server-wide module `base`.
Traceback (most recent call last):
  File "/home/odoovm/Odoo/odoo-12.0/odoo/service/server.py", line 1098, in load_server_wide_modules
    odoo.modules.module.load_openerp_module(m)
  File "/home/odoovm/Odoo/odoo-12.0/odoo/modules/module.py", line 368, in load_openerp_module
    __import__('odoo.addons.' + module_name)
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/home/odoovm/Odoo/odoo-12.0/odoo/modules/module.py", line 82, in load_module
    exec(open(modfile, 'rb').read(), new_mod.__dict__)
  File "<string>", line 5, in <module>
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/__init__.py", line 7, in <module>
    from . import ir_model
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 330, in <module>
    class IrModelFields(models.Model):
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 520, in IrModelFields
    @api.onchange('ttype', 'model_id', 'relation')
TypeError: onchange() takes 1 positional argument but 3 were given
2020-06-30 14:16:30,436 6134 WARNING ? odoo.service.server: 'inotify' module not installed. Code autoreload feature is disabled
2020-06-30 14:16:30,440 6134 INFO ? odoo.service.server: HTTP service (werkzeug) running on odoovm-VirtualBox:8099
Exception in thread odoo.service.cron.cron0:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/odoovm/Odoo/odoo-12.0/odoo/service/server.py", line 425, in target
    self.cron_thread(i)
  File "/home/odoovm/Odoo/odoo-12.0/odoo/service/server.py", line 396, in cron_thread
    from odoo.addons.base.models.ir_cron import ir_cron
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/__init__.py", line 7, in <module>
    from . import ir_model
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 330, in <module>
    class IrModelFields(models.Model):
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 520, in IrModelFields
    @api.onchange('ttype', 'model_id', 'relation')
TypeError: onchange() takes 1 positional argument but 3 were given

Exception in thread odoo.service.cron.cron1:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/odoovm/Odoo/odoo-12.0/odoo/service/server.py", line 425, in target
    self.cron_thread(i)
  File "/home/odoovm/Odoo/odoo-12.0/odoo/service/server.py", line 396, in cron_thread
    from odoo.addons.base.models.ir_cron import ir_cron
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/__init__.py", line 7, in <module>
    from . import ir_model
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 330, in <module>
    class IrModelFields(models.Model):
  File "/home/odoovm/Odoo/odoo-12.0/odoo/addons/base/models/ir_model.py", line 520, in IrModelFields
    @api.onchange('ttype', 'model_id', 'relation')
TypeError: onchange() takes 1 positional argument but 3 were given