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 ('8970b7838913413d0c625ffddc7b61e4', -1, 1748042597, 1748042597, '12bc74cd', -9, 0, 0)

Line : 190
File : sessions.php