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 ('0099eae0e09fb4c980bb45c499c9a334', -1, 1713295893, 1713295893, '0391c457', 0, 0, 0)

Line : 187
File : sessions.php