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) VALUES ('2e8b3b018136a95504b5e960525a5825', -1, 1714693647, 1714693647, '12de43fb', -9, 0)

Line : 158
File : sessions.php