phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'af80cd6f2d5de7024408303033661724' 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 ('af80cd6f2d5de7024408303033661724', -1, 1529791357, 1529791357, '369e1edb', 8, 0, 0)

Line : 187
File : sessions.php