2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - ERROR (version 7.1.0.0-12, build 1 from 2017-05-16 17.18.02 by buildguy) : Unexpected error rolling back the database connection.2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - ERROR (version 7.1.0.0-12, build 1 from 2017-05-16 17.18.02 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseException:2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - Unable to get database metadata from this database connection2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 -2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.core.database.Database.getDatabaseMetaData(Database.java:2919)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:888)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:880)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.trans.steps.tableoutput.TableOutput.dispose(TableOutput.java:621)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.trans.Trans.prepareExecution(Trans.java:1128)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at org.pentaho.di.ui.spoon.trans.TransGraph$29.run(TransGraph.java:4197)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - at java.lang.Thread.run(Thread.java:745)2019/08/24 17:11:37 - pms_pj_technical_info表输出.0 - Caused by: java.lang.NullPointerException