phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f0a81f7cc88e2f7c4b1041380e9a0de5', -1, 1713997438, 1713997438, '039010fe', -4, 0, 0)

Line : 187
File : sessions.php