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 ('8cb7aeaa9955341c39ba22c2682417d7', -1, 1747812441, 1747812441, '12dec288', 2, 0, 0)

Line : 190
File : sessions.php