phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c7fef188e01022fe9ddeccf688b2c2bf' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c7fef188e01022fe9ddeccf688b2c2bf', -1, 1728397922, 1728397922, '2cdcfbec', -1, 0, 0)

Line : 187
File : sessions.php