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 ('15b7b9c4e65dd481bff2e9103258def6', -1, 1714682904, 1714682904, '0387dba6', -7, 0)

Line : 158
File : sessions.php