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 ('03ea055893e5b4716f8145bda5eb57e1', -1, 1752630350, 1752630350, 'd849d890', -4, 0, 0)

Line : 189
File : sessions.php