Hello everyone,i have problems when build version 2.8.69 by "ant"

[ShengRongder]

but it still has the following errors

Failed to execute goal org.mobicents.tools:maven-du-plugin:3.0.13:copy-dependencies (default) on project components-test-du-1-du: Error copying artifact from /usr/mobicents/jain-slee-2.8.69/release/checkout/core/container/components/test-du/du1/events/target/classes to /usr/mobicents/jain-slee-2.8.69/release/checkout/core/container/components/test-du/du1/du/target/classes/jars/classes: /usr/mobicents/jain-slee-2.8.69/release/checkout/core/container/components/test-du/du1/events/target/classes (是個目錄)

Thanks everyone,I appreciate your help. Best regard.