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Tried to install Inkscape but I'm getting this error.

GPG error: https://deb.opera.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D615560BA5C7FF72

I hope someone can help.

Maan Cases
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1 Answers1

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you forgot this step when adding the repo:

wget -qO- https://deb.opera.com/archive.key | sudo apt-key add -

This command adds the key. Note: wget needs to be installed.

ravery
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