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 ('2adb14153253a2730377b34456e24023', -1, 1730439159, 1730439159, '12e348ac', -1, 0, 0)

Line : 195
File : sessions.php