Failed to retrieve endpoints from source

Hello,

I am getting this error "Failed to retrieve endpoints from the source..."  while trying to discover application endpoints regardless of the format i.e dir/zip/War. I am using the Attack Surface detector version  1.2.3 from BApp store from Burp tool.  The application I am trying is based on Java spring boot framework. Any help on this would be appreciated.

Thanks,
Shri
