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
This will solve the problem
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6494C6D6997C215E
This MIGH HAVE to do with a NEW APP ID!
My app had is app id renewed on developer.facebook …
Recently declassified photographs taken by U2 spy planes in the 1950s and 1960s provide an important new source of historical aerial imagery useful for Eurasian archaeology.https://www.cambridge.org/core/journals/advances-in-archaeological-practice/article/near-eastern-landscapes-and-declassified-u2-aerial-imagery/A16A04FB4990B74B9FF750DCCF31A141/core-reader
Here are two simple working examples of a Jquery Ajax Search using JSON data.
A little with portugal