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 ('1fd065e8fc06a4f62bc3c7eb24daeb47', -1, 1713975431, 1713975431, '0395e62c', 0, 0, 0)

Line : 187
File : sessions.php