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 ('209e17147716a2fcd3f1f574800a51d2', -1, 1740363188, 1740363188, '03805e7d', 17, 0)

Line : 158
File : sessions.php