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 ('33e941e426e4687df5662b45c59326e4', -1, 1713907499, 1713907499, '0391ad70', -1, 0, 0)

Line : 187
File : sessions.php