I am working on a project and need to install the leap motion libraries I did that and it shows up in contributed libraries however when I run basic code it gives me this error and I am not sure how to solve it. Please advise
Native code library failed to load.
java.lang.UnsatisfiedLinkError: no LeapJava in java.library.path
Hi @ajaynischal,
Welcome to the forum! 
Which operating system are you running on? Which version of Processing? Did you try uninstalling the library / installing it again?
It works for me on Linux with Processing 4.0b2 and Leap Motion for Processing 2.3.1.6
If the error persists, please file an issue on their GitHub repository.