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 ('836a0283b50085d5c60d5c9c3dd7a8ea', -1, 1730416383, 1730416383, '340eead5', -1280, 0, 0)

Line : 195
File : sessions.php