this error because of the lack of org.apache.com mons. IO. FileUtils this class in the jar package. You can try adding commons-io's jar package to your project to solve this problem.
If you are building with Maven, you can import commons-io by adding the following dependencies to your pom.xml file:
<dependency> <groupId>commons-iogroupId> <artifactId>commons-ioartifactId> <version>2.6version> dependency>
If you are not using Maven, you can manually add commons-io's jar package to your project. You can download the jar package from the Maven central repository and place it in the classpath of your project.
Ensure that the version of commons-io you add is compatible with the versions of other jar packages in your project to avoid possible conflicts.