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I am running these commands to reinstall php5.6 and I getting this error:

add-apt-repository ppa:ondrej/php

W: GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E W: There is no public key available for the following key IDs: 1397BC53640DB551 W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-i386/Packages 404 Not Found [IP: 172.217.8.142 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.

Please advise

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1 Answer 1

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Execute the following commands in terminal

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUBKEY>

where is your missing public key for repository, e.g.

Execute the following commands in terminal

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUBKEY>

where PUBKEY is your missing public key for repository, e.g. 6494C6D6997C215E.

Then update

sudo apt-get update

ALTERNATE METHOD:

sudo gpg --keyserver pgpkeys.mit.edu --recv-key  <PUBKEY>
sudo gpg -a --export <PUBKEY> | sudo apt-key add -
sudo apt-get update
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  • thanks, but still getting this message: W: Failed to fetch dl.google.com/linux/chrome/deb/dists/stable/Release Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file) E: Some index files failed to download. They have been ignored, or old ones used instead.
    – West14
    Nov 17, 2019 at 5:02
  • navigate to /etc/apt/sources.list.d/ and use ls to find the files present. If there is any file, please open it and paste its contents here Nov 17, 2019 at 5:12
  • Hi, I found this file: google-chrome.list which contains the following: ### THIS FILE IS AUTOMATICALLY CONFIGURED ### # You may comment out this entry, but any other modifications may be lost. deb dl.google.com/linux/chrome/deb stable main
    – West14
    Nov 17, 2019 at 14:38

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