appian deployment for the first time

i am trying to configure appian for the first time. i followed all steps required https://docs.appian.com/suite/help/18.1/Quick_Start_Installation_Guide_for_Windows_and_JBoss.html

i am receiving the below error , i can't solve it

Select the type of deployment to perform on the environment dev
1 - Deploy configurations to Appian
2 - Deploy configurations to JBoss
3 - Deploy configurations to both
B - Back
Q - Quit
> 3
JBoss configurations successfully deployed for environment dev

FAILURE: Build failed with an exception.

* Where:
Build file 'C:\appian181\appian\_admin\_scripts\configure\tasks\configure.gradle
' line: 227

* What went wrong:
Execution failed for task ':deployAppianConfigurations'.
> configure_crasbf2w34ry688x7sbez4ubt$_run_closure12$_closure31$_closure33$_clos
ure36$_closure37

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug
option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
Appian configurations failed to deploy for environment dev

======================================================================
Configure Appian

This script assists with configuring Appian on various environments.
======================================================================

Repository location: C:\appian181\repo\appian
Backup location: C:\appian181\backup\appian
Registered environments: dev
Selected environment for deployment: dev
JBoss location: C:\appian181\appian\bin\jboss\jboss-eap-6.4