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 ('0798f88910662fb061c82e0d0225c274', -1, 1748100907, 1748100907, '12767248', -9, 0, 0)

Line : 190
File : sessions.php