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 ('9a3ee375d00e71d5cdd2c9a4d3f70800', -1, 1713931446, 1713931446, '12bc3ddf', -10, 0, 0)

Line : 187
File : sessions.php