Pentaho导入数据和清理时出错

Question

因此我们每天收到一个名为a的文件，pentaho获取文件并删除分隔符并将数据加载到sql表中，该进程在成功运行后没有进行任何更改，但现在我们收到这个奇怪的错误消息我们无法弄清楚问题是什么。

2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) : Unexpected error
2015/08/11 13:10:06 - Table output.0 - Prepared statement : INSERT INTO dbo.M_FILE (FILE_NAME) VALUES ( ?)
2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) : java.lang.NullPointerException
2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) :  at org.pentaho.di.trans.step.BaseStep.getRowFrom(BaseStep.java:1798)
2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) :  at org.pentaho.di.trans.steps.textfileinput.TextFileInput.processRow(TextFileInput.java:882)
2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) :  at org.pentaho.di.trans.step.RunThread.run(RunThread.java:50)
2015/08/11 13:10:06 - read a file.0 - ERROR (version 4.3.0-stable, build 16786 from 2012-04-24 14.11.32 by buildguy) :  at java.lang.Thread.run(Unknown Source)