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 ('bf8ffe7a9bda941e3d7966a8b370182a', -1, 1747857744, 1747857744, '0d3b37ed', 30, 0, 0)

Line : 190
File : sessions.php