Executable-jar not working on a Mac

Question

I have developed a small Java application using Eclipse. I created an executable jar from it using one jar. I want to be able to execute this application on both a pc or a mac.

The application executes perfectly on a pc but on a mac, I have this error message:

It seems there is some problem with one-jar but why is it working with a pc but not with a mac? Do you have any idea about the problem?

I'm using Java 8 on both the pc and the mac.

Thank you