Blacklist blocked all access to internet (kind of)

[massartval]

I use Linux 18.04. I installed chomper yesterday following these instructions. I got an issue at some point "Error: Couldn't install package: markupsafe", that I fixed (I guess?) by installing it from here. The rest of the install went smoothly. However, when I tried to blacklist some websites and start chomper from the CLI, nothing happened.

This morning I decided to give it a second chance. I read the documentation and used the advised command line instead of the manual installation:
curl -sL https://raw.githubusercontent.com/aniketpanjwani/chomper_installers/master/debian.sh | bash && source ~/.bashrc

I then followed the instructions on the terminal to remove the existing chomper directory and install it again. I got the error again that I was missing markupsafe (honestly I can't remember if I downloaded it again or if I forgot). I also got a message that it was skipping installing the certificate (mitmproxy-ca.pem) because it already existed. I didn't think much of it, maybe I should have? It seemed normal to me since I had already installed the program once, and I remembered manually adding the certificate to firefox.

I then modified the "allon" blacklist as instructed in the documentation, started it using the CLI (chomper allon 120), and I got a success message. Great success indeed. Everything was blocked (Firefox error code: ssl_error_rx_record_too_long). However, I was still receiving messages on Discord (desktop version), although I couldn't send anything myself. Luckily, the reset command worked like a charm.

Maybe I did something wrong, I don't know much about programming yet. I just thought that I should let you know that this happened.

Edit:

I think I might have had the same issue as this one, however I didn't test different configurations of chomper.