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 ('f8d0b2139eacd0b2145c879a670c7a08', -1, 1714009658, 1714009658, '12d9c227', -10, 0, 0)

Line : 187
File : sessions.php