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 ('55ae05dc0728cbb10fc472fc9231beb7', -1, 1748134472, 1748134472, '0394e3c5', 3, 0, 0)

Line : 190
File : sessions.php