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) VALUES ('0f568f70cf5d2a29f4b60a8239e65a5a', -1, 1714766041, 1714766041, '03114ae3', -9, 0)

Line : 158
File : sessions.php