Caused by: java.lang.ClassNotFoundException: org.antlr.runtime.tree.CommonTree

This error message indicates that the Java program is unable to locate the class "org.antlr.runtime.tree.CommonTree". This could be due to several reasons such as:

1. The required JAR file is not included in the classpath.
2. The JAR file is corrupted or missing.
3. The class is not present in the expected package or location.
4. There is a version mismatch between the required JAR file and the one being used.

To resolve this issue, you can try the following:

1. Check if the required JAR file is present in the classpath and add it if it's missing.
2. Ensure that the JAR file is not corrupted and is the correct version.
3. Verify that the class is present in the expected package or location.
4. If you are using a different version of the JAR file, ensure that it is compatible with the code being used.