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 ('0478f168ea45ff98f83fcd5ff1ce6a8b', -1, 1713539459, 1713539459, '0391082a', -11, 0, 0)

Line : 187
File : sessions.php