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 ('8fe12c71714bb4786820b7f3bf000150', -1, 1730424584, 1730424584, '03902acd', -1, 0, 0)

Line : 195
File : sessions.php