Please help me figure out why the error is returned?

(cx_Oracle.DatabaseError) ORA-00925: missing INTO keyword [SQL: INSERT INTO my_table (type_id, contact_id) VALUES (:type_id, :contact_id) RETURNING my_table.id, my_table.contact_id] [parameters: [{'type_id': 'binding_card_ma', 'contact_id': 'party_id_4'}, {'type_id': 'binding_card_ma', 'contact_id': 'party_id_5'}]]

I use sqlalchemy, python

ins = f'INSERT INTO {my_table} (type_id, contact_id) ' \
f'VALUES (:type_id, :contact_id) ' \
f'RETURNING {my_table}.id, {my_table}.contact_id'

session.execute(ins, value_list)

Vadim Lejnin,
please clarify how to use the SRC tag?