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 ('94ee0966d1d8c0a3bca825c4c87dd110', -1, 1742908978, 1742908978, 'a28000000', -2, 0, 0)

Line : 187
File : sessions.php