Signature Verification Error

Error:
"W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive-10.kali.org/kali kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>"
 
Error Fix:
Add keys
You will need the package,” kali-archive-keyring2018.1all.deb”
Retrieve the deb file by using the wget command.
Type as shown below:
root@kali-pi:~# wget https://http.kali.org/kali/pool/main/k/kali-archive-keyring/kali-archive-keyring_2018.1_all.deb
 
Install the package using the, dpkg command and the -i flag to install the package.
root@kali-pi:~# dpkg -i kali-archive-keyring2018.1all.deb

Lastly, to resynchronize the package index files from their sources, type:
root@kali-pi:~# apt update && apt upgrade