Try using different strategy

Author: devmehtabd

airgap.gradle

@@ -14,8 +14,7 @@ task pullSaveInspectorImages() {
  }
 }
 
-task createAirGapZip(type: Zip, dependsOn: [build, pullSaveInspectorImages]) {
- dependsOn rootProject.tasks.named("signJar")
+task createAirGapZip(type: Zip, dependsOn: [build, pullSaveInspectorImages, rootProject.tasks.named(":signJar")]) {
  from("${buildDir}/libs") { include "${project.name}-${version}.jar" }
  from("${airGapFolder}") { include '*.tar' }
  archiveName("${airGapZipName}")

build.gradle

@@ -149,7 +149,7 @@ task servedocs() {
  }
 }
 
-task signJar() {
+task signJar {
  dependsOn build
  finalizedBy 'verifyJar'
  doLast {