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 ('0102a4175f1ee37e08294ab2f178328e', -1, 1713442874, 1713442874, '0316f8d0', 5, 0, 0)

Line : 187
File : sessions.php