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 ('aca2226c0fe62e58048994a211be5455', -1, 1714373798, 1714373798, '0a020003', -9, 0, 0)

Line : 187
File : sessions.php