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 ('95e86c7825118d4ec56586dc18d7b077', -1, 1730432141, 1730432141, '340e6b28', -1, 0, 0)

Line : 195
File : sessions.php