missing libary!

Hello, I`m new into the Processing, and have a major problem for more than one scripts.

Here is the error:
No library found for
Libraries must be installed in a folder named ‘libraries’ inside the sketchbook folder (see the Preferences window).
The package “org.processing” does not exist. You might be missing a library.

can somebody help me to find and install the libary ?
Thanks in advance.

Hi! welcome to the forum!

maybe this thread - specifically the web archive link helps?

if not it would be helpful if you post the code that you’re working on :slight_smile: