trying to create new/next activity through automated action - execute python code. please check the code below, when this code executes, its throwing error 

ValueError: [class 'psycopg2.ProgrammingError']: "can't adapt type 'ir.model'" while evaluating

the python code in automated action on update of mail.activity which should execute on Save button: 

Python Code:

activity = record

new_activity_name = "Follow-up: {} 123" 

new_activity_summary = "Follow-up on activity {} 123" 

new_mail_activity = env['mail.activity'].create({

'activity_type_id' : 2, 

'note' : "Follow-up note for activity {} 123", 

'display_name': new_activity_name,

'summary': new_activity_summary,

'user_id': activity.user_id.id,

'date_deadline': activity.date_deadline,

'res_id': activity.res_id,

'res_model_id': activity.res_model_id 

})

env['log'].create({'message': "New follow-up activity scheduled for activity {} 123"})

regards