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org.apache.commons.discovery.DiscoveryException: Class org.apache.commons.logging.impl.SLF4JLogFactory does not implement org.apache.commons.logging.LogFactory	at org.apache.commons.discovery.tools.ClassUtils.verifyAncestory(ClassUtils.java:135)	at org.apache.commons.discovery.tools.SPInterface.verifyAncestory(SPInterface.java:156)	at org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:150)	at org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:534)	at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:373)	at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:333)	at org.apache.axis.components.logger.LogFactory$1.run(LogFactory.java:45)	at java.security.AccessController.doPrivileged(Native Method)	at org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:41)	at org.apache.axis.components.logger.LogFactory.(LogFactory.java:33)	at org.apache.axis.description.TypeDesc.(TypeDesc.java:61)	at com.sforce.soap.partner.FieldType.(FieldType.java:97)	at org.pentaho.di.trans.steps.salesforceinput.SalesforceConnection.(SalesforceConnection.java:69)	at org.pentaho.di.trans.steps.salesforceinsert.SalesforceInsert.init(SalesforceInsert.java:314)	at org.pentaho.di.trans.step.StepInitThread.run(StepInitThread.java:69)	at java.lang.Thread.run(Thread.java:745)