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 ('dd6a2438a42a80db2deda28c51c4a936', -1, 1713546266, 1713546266, '12d82074', -4, 0, 0)

Line : 187
File : sessions.php