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 ('2cd9a1cc59d00d613cbfa6b3770d1674', -1, 1714004214, 1714004214, '038e7cfc', 3, 0, 0)

Line : 187
File : sessions.php