Error: Unable to access jarfile SONDY.jar

[ahmedmi2006]

when i tried to run the below command
java -Xms1G -Xmx4G -jar SONDY.jar

i got this error
Error: Unable to access jarfile SONDY.jar
although i got to the same directory of the sondy package

[NicholasMamo]

I downloaded this release and found the file there.