Leapp execution failure after final package download

Hello there, it’s me again…
After sloving nearly ten problems, here comes a another problem here but i cant handle
So I have to came here to seeking for help

Condition overview
When i processing the “leapp upgrade” on my Centos7.9
(roughly in accordance with this guidance of almaLinux to transfrom my system to almalinux),
It always return error like this(seems like a python programical problem like picture showned below)

That’s so strange, right? Normally, this shouldn’t have this kind of problem appeared…