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Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2f21e2df88958f654c3da82d1f4e6c97' for key 'PRIMARY'

INSERT INTO trunghocduytan_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2f21e2df88958f654c3da82d1f4e6c97', -1, 1715165591, 1715165591, '12dadae6', 11, 0, 0)

Line : 187
File : sessions.php