error log

Error:
Odoo Server Error

Traceback (most recent call last):
  File "/opt/odoo12/odoo/tools/safe_eval.py", line 350, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
  File "", line 11, in <module>
  File "/opt/odoo12/odoo/sql_db.py", line 148, in wrapper
    return f(self, *args, **kwargs)
  File "/opt/odoo12/odoo/sql_db.py", line 225, in execute
    res = self._obj.execute(query, params)
psycopg2.IntegrityError: update or delete on table "saloka_pos_session" violates foreign key constraint "saloka_sale_session_id_fkey" on table "saloka_sale"
DETAIL:  Key (id)=(320) is still referenced from table "saloka_sale".


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/odoo12/odoo/http.py", line 653, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo12/odoo/http.py", line 312, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/opt/odoo12/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/opt/odoo12/odoo/http.py", line 695, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo12/odoo/http.py", line 344, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo12/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo12/odoo/http.py", line 337, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo12/odoo/http.py", line 938, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo12/odoo/http.py", line 517, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo12/addons/web/controllers/main.py", line 966, in call_button
    action = self._call_kw(model, method, args, {})
  File "/opt/odoo12/addons/web/controllers/main.py", line 954, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo12/odoo/api.py", line 749, in call_kw
    return _call_kw_multi(method, model, args, kwargs)
  File "/opt/odoo12/odoo/api.py", line 736, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/opt/odoo12/odoo/addons/base/models/ir_cron.py", line 76, in method_direct_trigger
    self.sudo(user=cron.user_id.id).ir_actions_server_id.run()
  File "/opt/odoo12/odoo/addons/base/models/ir_actions.py", line 565, in run
    res = func(action, eval_context=eval_context)
  File "/opt/odoo12/odoo/addons/base/models/ir_actions.py", line 441, in run_action_code_multi
    safe_eval(action.sudo().code.strip(), eval_context, mode="exec", nocopy=True)  # nocopy allows to return 'action'
  File "/opt/odoo12/odoo/tools/safe_eval.py", line 373, in safe_eval
    pycompat.reraise(ValueError, ValueError('%s: "%s" while evaluating\n%r' % (ustr(type(e)), ustr(e), expr)), exc_info[2])
  File "/opt/odoo12/odoo/tools/pycompat.py", line 86, in reraise
    raise value.with_traceback(tb)
  File "/opt/odoo12/odoo/tools/safe_eval.py", line 350, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
  File "", line 11, in <module>
  File "/opt/odoo12/odoo/sql_db.py", line 148, in wrapper
    return f(self, *args, **kwargs)
  File "/opt/odoo12/odoo/sql_db.py", line 225, in execute
    res = self._obj.execute(query, params)
ValueError: <class 'psycopg2.IntegrityError'>: "update or delete on table "saloka_pos_session" violates foreign key constraint "saloka_sale_session_id_fkey" on table "saloka_sale"
DETAIL:  Key (id)=(320) is still referenced from table "saloka_sale".
" while evaluating
'# Available variables:\n#  - env: Odoo Environment on which the action is triggered\n#  - model: Odoo Model of the record on which the action is triggered; is a void recordset\n#  - record: record on which the action is triggered; may be void\n#  - records: recordset of all records on which the action is triggered in multi-mode; may be void\n#  - time, datetime, dateutil, timezone: useful Python libraries\n#  - log: log(message, level=\'info\'): logging function to record debug information in ir.logging table\n#  - Warning: Warning Exception to use with raise\n# To return an action, assign: action = {...}\n\nenv.cr.execute("DELETE FROM saloka_pos_session WHERE pos_id = (SELECT id FROM saloka_pos WHERE name = \'192.168.1.18\' LIMIT 1) AND state = \'opened\'")\nenv.cr.commit()'