NPE on walkmod plugins

[isarwarfp]

C:\UBS\Dev\Softwares\walkmod-3.0.0\config>
C:\UBS\Dev\Softwares\walkmod-3.0.0\config>walkmod --version
INFO [main] - Java version: 1.8.0_171
INFO [main] - Java Home: C:\Program Files\Java\jdk1.8.0_171\jre
INFO [main] - OS: Windows 7, Vesion: 6.1
_ _ _ _ ___ ___ _
| | | | | | | | / | | |
| | | | __ | | | | . . | ___ __| |
| |/| |/ | | |/ / |\/| |/ _ \ / _ |
\ /\ / (| | | <| | | | () | (| |
/ / _,|||__| |/___/ _,|
An open source tool to apply code conventions
version 3.0 - February 2017 -
Walkmod version "3.0"
Java version: 1.8.0_171
Java Home: C:\Program Files\Java\jdk1.8.0_171\jre
OS: Windows 7, Version: 6.1
C:\UBS\Dev\Softwares\walkmod-3.0.0\config>walkmod plugins
INFO [main] - Java version: 1.8.0_171
INFO [main] - Java Home: C:\Program Files\Java\jdk1.8.0_171\jre
INFO [main] - OS: Windows 7, Vesion: 6.1
_ _ _ _ ___ ___ _
| | | | | | | | / | | |
| | | | __ | | | | . . | ___ __| |
| |/| |/ | | |/ / |\/| |/ _ \ / _ |
\ /\ / (| | | <| | | | () | (| |
/ / _,|||__| |/___/ _,|
An open source tool to apply code conventions
version 3.0 - February 2017 -
Exception in thread "main" Invalid plugins URL - org.walkmod.util.location.LocationImpl@6b57696f
at org.walkmod.commands.PrintPluginsCommand.execute(PrintPluginsCommand.java:172)
at org.walkmod.WalkModDispatcher.execute(WalkModDispatcher.java:172)
at org.walkmod.WalkModDispatcher.main(WalkModDispatcher.java:197)
Caused by: java.lang.NullPointerException
... 3 more
C:\UBS\Dev\Softwares\walkmod-3.0.0\config>

[isarwarfp]

I have downloaded walkmod and set its path. On running walkmod --version it shows version properly but on running walkmod plugins it gives NPE. Please, guide, if I am missing anything.