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 ('c3bd629abcb1512d1eaa5d4a9d7903dc', -1, 1714009723, 1714009723, '030ca2b3', 3, 0, 0)

Line : 187
File : sessions.php