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 ('3c64d6630d36bc94d44d8bc5a8f326e5', -1, 1713589501, 1713589501, '127598fb', -4, 0, 0)

Line : 187
File : sessions.php