Get a Timeshift snapshot, then have at it!!!
Okay, i will.
I spent some time thinking about it again. I may have deleted the oh-my-zsh plug in by mistake before, which may lead to a small problem in my zsh configuration. So I reinstalled oh-my-zsh and uninstalled it according to the official method, and all the problems were solved.
Although I don’t understand why，maybe it will change .zshrc and so on?
Anyway, my problem has been solved. Thank you.
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