NetBeans compiling error for JWS app

so I created an app with various jar files, i wanted to execute this program using JWS but NetBeans launches an Building Error, and gives me 2 errors:

C:\Proyecto OUMA\ouma.administracfdi.Reader\nbproject\jnlp-impl.xml:253: The following error occurred while executing this line:

C:\Proyecto OUMA\ouma.administracfdi.Reader\nbproject\jnlp-impl.xml:845: jarsigner returned: 1

Then i refer to the lines that the errors gave me:

<antcall target="generate-jnlp"/>

<sign-jars keystore="${jnlp.signjar.keystore}" storepass="${jnlp.signjar.storepass}" keypass="${jnlp.signjar.keypass}" alias="${jnlp.signjar.alias}" mainjar="${dist.jar}" destdir="dist" codebase="${jnlp.codebase.value}" signedjarsprop="jnlp.signed.jars" **componentsprop="jnlp.components">**