The .jar file cant be find

Hello Anton,
I am facing a problem after working on a long modification on the traccar system. When using Locally, it works fine with all the modifications but when I tried to deploy on Digital Oceans it shows an error. can you help me to navigate the problem?
Thanks

ezi west check argew

cd /opt/traccar/
default install bota kehone install yarekew

java -jar tracker-server.jar /conf/traccar.xml&