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 ('c19c64815c83d5f2ec3563c8a1f04c51', -1, 1715287807, 1715287807, '1276c1e8', 3, 0, 0)

Line : 189
File : sessions.php