-1
Good afternoon, all right?
The problem is the version of the java the program was compiled in, and the version of the java the . jar is running in
For example, sometimes in your IDE you are running java 11, but on the machine you are running java 8.
See which version is in the IDE, and from the terminal, running java -version on the terminal you can see which version of the machine.
This message seems to be related to the java version.
– Danizavtz