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 ('e93d1632dd9a85c61579addc5b43a65c', -1, 1714018334, 1714018334, '038dc19e', -4, 0, 0)

Line : 187
File : sessions.php