W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: jammy InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY B7B3B788A8D3785C
Open your terminal and run the following command to download the key:
sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys B7B3B788A8D3785C
Alternatively, you can use wget to download the key and add it manually:
wget
sudo apt-key add RPM-GPG-KEY-mysql-2022
After adding the key, update your package list:
sudo apt-get update
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