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 ('e233e48c48932acd5a430cc8e8de5be8', -1, 1713589099, 1713589099, '0d3a963b', 4, 0, 0)

Line : 187
File : sessions.php