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 ('39315b7c0a64288b4b657fea2e12ba13', -1, 1730415592, 1730415592, '03911307', -1280, 0, 0)

Line : 195
File : sessions.php