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 ('4a2d30e609c9c9ed7d854d15f39dacb6', -1, 1715309015, 1715309015, '12e300c0', 2, 0, 0)

Line : 189
File : sessions.php