JAR does not exist or is not a normal file: /opt/module/hadoop-3.1.3/share

This error message indicates that the JAR file you are trying to access does not exist or is not a valid file.

You can try the following steps to resolve this issue:

1. Check if the JAR file exists in the specified path. You can use the `ls` command to list the files in the directory.

2. If the JAR file exists, make sure that it is a valid file. You can use the `file` command to check the file type.

3. Check if you have the necessary permissions to access the file. You can use the `chmod` command to change the file permissions if necessary.

4. Verify that the path specified in the command is correct and that it points to the correct location of the JAR file.

If none of these steps work, you may need to reinstall the software that uses the JAR file or contact the software vendor for further assistance.