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it seems bad luck also likes me.! i'm trying to install mongo DB but facing issue while updating apt-get repository as below

Reading package lists... Done   
E: The repository 'http://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/3.0 Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BC711F9BA15703C6
E: The repository 'http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.4 Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://cz.archive.ubuntu.com/ubuntu precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5

i suspect that something messed up with /etc/apt/sources.list.d Can anyone help me how could i resolve this and install mongo DB.

Many Thanks, Surya Kiran.

N0rbert
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surya kiran
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1 Answers1

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Try this code to solve your problem. This works for me:

sudo rm -rf /var/lib/apt/lists/*
sudo apt-get update
Taha Hamedani
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