I keep getting a warning when using apt update

What have you tried: fixing missing keys

What is the error: Err:3 Index of /i2p-maintainers/i2p/ubuntu noble InRelease
Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key 0A2DD0D3D9BB5DF7484D76B1A6D4480DE82574BB, which is needed to verify signature. Signing key on 474BC46576FAE76E97C1A1A1AB9660B9EB2CC88B is not bound: Policy rejected asymmetric algorithm because: RSA1024 is not considered secure since 2014-02-01T00:00:00Z

What device is this on:Debian Linux

That error is not kali related, better look it up with your favorite search engine

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But i key getting a missing key error is that not kali related

It is not - you added some 3rd party software to it, which causes the problem

Okay i guess ill have to find out what software it was

It’s i2p for ubuntu, that’s why I quoted it.

Most likely you blindly followed some outdated tutorial somewhere about “being anonymous on the internet”

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okay i set up adguard but it doesn’t seem to be working

how can i remove it from my system to avoid this errors

You can you /etc/apt and find keyring file that is ended with .gpd.d remove it
first confirm that file is related to error

remove 3rd party repos that you’ve added in /etc/apt/sources.list

┌──(darc㉿Darc)-[~]
└─$ /etc/apt

┌──(darc㉿Darc)-[/etc/apt]
└─$ ls
apt.conf.d keyrings sources.list sources.list~ trusted.gpg.d
auth.conf.d preferences.d sources.list.d trusted.gpg trusted.gpg~

Unless you added more stuff since your initial question - delete the i2p.list

Judging from the other entries you already blindly followed a whole lot of guides without knowing what you do, so no guarantee that the system isn’t already damaged.

This has nothing to do with the problem the OP hat in january, 4 months before the blog post.