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 ('1b5be9b9b452d4a13c3c7e7d48445a87', -1, 1751111747, 1751111747, 'd849d889', -30, 0, 0)

Line : 189
File : sessions.php