Help ... error during build

[ghost]

 I couldn't find valid binary release zip so i building from the source which several link also invalid, like diameter mux, smpp extension,ss7, i download those dependency file to bypass the error .

But i facing issue below which i couldn't find any solution.

 [exec] [INFO] Forking standard-components-du 7.1.77
 [exec] [INFO] --- maven-du-plugin:4.0.1:copy-dependencies (default) @ standard-components-du ---
 [exec] [INFO] Copying classes to /home/penguin-c/Downloads/jain-slee-7.2.0-150/release/checkout/core/container/standard-components/du/target/classes/jars/classes
 [exec] [ERROR] Failed to execute goal org.mobicents.tools:maven-du-plugin:4.0.1:copy-dependencies (default) on project standard-components-du: Error copying artifact from /home/penguin-c/Downloads/jain-slee-7.2.0-150/release/checkout/core/container/standard-components/standard-events-jar/target/classes to /home/penguin-c/Downloads/jain-slee-7.2.0-150/release/checkout/core/container/standard-components/du/target/classes/jars/classes: /home/penguin-c/Downloads/jain-slee-7.2.0-150/release/checkout/core/container/standard-components/standard-events-jar/target/classes (Is a directory) -> [Help 1]

[yulianoifa-mobius]

Hi What do you have under standard-events-jar/target/classes , There should not be such folder, also there should be nothing in src/main/java for standard-events-jar as its generating only xml and jar.