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 ('38722d27d31fc03aba21347bf0baa20a', -1, 1713529840, 1713529840, '12bc420d', -8, 0, 0)

Line : 187
File : sessions.php