'Unable to load the job from XML file' encountered during use of kettle

The "Unable to load the job from XML file" problem occurred when executing the following code

Execution code:

            JobMeta jobMeta = new JobMeta(log, jobFileName, null);

Exception message:

org.pentaho.di.core.exception.KettleXMLException: 
Unable to load the job from XML file [file:///D:/credit/hldzxjb/ep_yw.kjb]

Unable to load job info from XML node

Unable to read Job Entry copy info from XML node : org.pentaho.di.core.exception.KettleStepLoaderException: 
No valid step/plugin specified (jobPlugin=null) for TRANS


No valid step/plugin specified (jobPlugin=null) for TRANS

Reply content:

Occurred when executing the following code "Unable to load the job from XML file" problem

Execution code:

            JobMeta jobMeta = new JobMeta(log, jobFileName, null);

Exception information:

org.pentaho.di.core.exception.KettleXMLException: 
Unable to load the job from XML file [file:///D:/credit/hldzxjb/ep_yw.kjb]

Unable to load job info from XML node

Unable to read Job Entry copy info from XML node : org.pentaho.di.core.exception.KettleStepLoaderException: 
No valid step/plugin specified (jobPlugin=null) for TRANS


No valid step/plugin specified (jobPlugin=null) for TRANS