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 ('ba3e7d7eb58498465e4d2513b1c8df76', -1, 1713933219, 1713933219, '12e25dcf', -7, 0, 0)

Line : 187
File : sessions.php