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 ('ee480e1747c8446b7c94354809c1c180', -1, 1714286594, 1714286594, '12bc1438', 7, 0)

Line : 158
File : sessions.php