How to uninstall/remove openproject completely? - ruby-on-rails

I have followed openproject.org and installed with latest version 12. But I want to check some feature in version 10. So I tried removing by sudo apt-get remove openproject and reinstalled with 10. While configure it getting an error like,
ActiveRecord::StatementInvalid: PG::UndefinedColumn: ERROR: column "updated_on" does not exist
LINE 1: SELECT MAX(updated_on) FROM "settings"
Not sure why this error is throwing. So I thought to remove openproject again completely. Please confirm the above command is enough to do this or anything else I need to do.

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I installed home brew so well. And it worked in the same konsole which I have done installation. But then, when I wanted to use it on an other terminal (new terminal page) I got error like zsh: correct 'brew' to 'free' [nyae]? and also zsh: command not found: brew . I don't know what to do, I tried a lot of things but still nothing changed than before.

brew install specific version of a package fails

For my project, I need to install a specific version of the icu4c package. I used to follow the instructions written in this answer and it was working. However, recently, when I needed to do the same, it failed with the following error
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==> Downloading https://ghcr.io/v2/homebrew/core/icu4c/manifests/67.1
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And when running cargo install crossfont I get this error:
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The output of /usr/sbin/apxs follows:
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Here's a screenshot of my terminal:
Terminal Screen shot
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otherwise if you're installing php70 for the first time, try the following::
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