I'm still learning about linux, so I don't know how to fix it, but I'll explain what happened
I just did dual boot, put / on ssd and /home on hdd ...
I used ISO 5.1.4 Hera
When I first opened the store:
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you mean by "first opened the store" that you opened the app center and all of sudden the terminal opened? (that black window you pasted a screenshot of it) – Omar Shawky May 3 at 22:36
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I just put an image after running sudo apt-get update to be able to show it more completely, the app center warning was more simplified, but the error is the same. – Vinícus May 4 at 18:33
Try this in a terminal:
sudo rm -r /var/lib/apt/lists/*
and then:
sudo apt-get clean && sudo apt-get update
Update will take some time because it's re-downloading all the files.
