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 ('85e306e5113b19dd58ef7a427a4c94b6', -1, 1754890183, 1754890183, 'd849d876', 8, 0, 0)

Line : 189
File : sessions.php