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) VALUES ('15e2e08466135886f572e75ee6a33eec', -1, 1714300094, 1714300094, '030c47ed', 19, 0)

Line : 158
File : sessions.php