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 ('b945b3d1a665a6f8037a999c8178a12f', -1, 1752806750, 1752806750, 'd849d8cf', 42, 0, 0)

Line : 190
File : sessions.php