phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ff9855de0987d0de65534d2f9e796af3' 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 ('ff9855de0987d0de65534d2f9e796af3', -1, 1714351863, 1714351863, 'c0a80201', -9, 0, 0)

Line : 187
File : sessions.php