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 ('5889d2d19437cb57d669d13e25863ab1', -1, 1713512590, 1713512590, '0380c615', -4, 0, 0)

Line : 187
File : sessions.php