Build Failure error while creating plugin skeleton.

[Rajesh Ramankutty]

Hi Guys m trying to create Plugin Skeleton By RefApp method while creating it showing the fallowing error kindly tell me solution.

Executing: "C:\Applications\Atlassian\atlassian-plugin-sdk-6.3.12\apache-maven-3.2.1\bin\mvn.bat" com.atlassian.maven.plugins:maven-amps-dispatcher-plugin:"6.3.21":run
-gs C:\Applications\Atlassian\atlassian-plugin-sdk-6.3.12\apache-maven-3.2.1/conf/settings.xml
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256M; support was removed in 8.0
[INFO] Scanning for projects...
[INFO]
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building adminUI 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-amps-dispatcher-plugin:6.3.21:run (default-cli) @ adminUI >>>
Downloading: https://maven.atlassian.com/repository/public/com/atlassian/sal/sal-api/3.0.2/sal-api-3.0.2.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.872 s
[INFO] Finished at: 2019-04-11T19:10:11+05:30
[INFO] Final Memory: 14M/126M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project adminUI: Could not resolve dependencies for project com.atlassian.plugins.tutorial.refapp:adminUI:atlassian-plugin:1.0-SNAPSH
OT: Failed to collect dependencies at com.atlassian.sal:sal-api:jar:3.0.2: Failed to read artifact descriptor for com.atlassian.sal:sal-api:jar:3.0.2: Could not transf
er artifact com.atlassian.sal:sal-api:pom:3.0.2 from/to atlassian-public (https://maven.atlassian.com/repository/public): Remote host closed connection during handshak
e: SSL peer shut down incorrectly -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
E:\atlastutorial\adminUI>a
'a' is not recognized as an internal or external command,
operable program or batch file.