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 ('529dfb2a10cc932b0ecc1c488bbfc4d0', -1, 1714095531, 1714095531, '038590c5', -4, 0, 0)

Line : 187
File : sessions.php