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 ('730ae1233e8541fd8732b9b05f2dc43f', -1, 1713441132, 1713441132, '0390f42c', -4, 0, 0)

Line : 187
File : sessions.php