Unable to build credential object with pdf service sdk

I am using adobe acrobat pdf service sdk to extract pdf files into json and excel files. My application is perfectly working in my windows system.

But when I have deployed it into a linux system, it is not working. There the program is exiting when my program is going to create and build the credential object as below:

Credentials credentials = Credentials.serviceAccountCredentialsBuilder().fromFile(<pdfservices-api-credentials file path>).build(); 

Even it is not throwing any error, it immediately exiting from the method.