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 ('170f4c1b32bd52babc73319c5508cb37', -1, 1730432813, 1730432813, '12e044b1', -1, 0, 0)

Line : 195
File : sessions.php