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 ('724f2cf10fdc3b674f182d6fb6242475', -1, 1757922142, 1757922142, 'd849d8ae', 15, 0, 0)

Line : 187
File : sessions.php