@Rajesh Kumar,
Please refer to the User Guide available on the asset page. There are 3rd party DLLs used by the VBO which you must get from NuGet.
If you're not familiar with what a NuGet package is, it's basically a zip file. You can download the nupkg file as described in the guide, change the file extension to .zip, and then unzip the contents. From there you can grab the required DLL and place it in you Blue Prism folder.
Cheers,
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Eric Wilson
Director, Integrations and Enablement
Blue Prism Digital Exchange
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