phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b9a6e81020e4ff8ca66f033df7a973c4', -1, 1715051735, 1715051735, '0387f6c1', 3, 0, 0)

Line : 189
File : sessions.php