Mule - DataMapper throws "Error while validating DB connection." -

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  ... org.jetel.connection.jdbc.DBConnection: डीबी कनेक्शन को मान्य करते समय त्रुटि। org.jetel.lookup पर org.jetel.connection.jdbc.DBConnection.getConnection (DBConnection.java:473) पर org.jetel.connection.jdbc.DBConnection.isValid (DBConnection.java; 3131) पर java.lang.NullPointerException Com.mulesoft.mule.module.datamapper पर org.jetel.graph.TransformationGraph.preExecute (TransformationGraph.javaSTART_12) पर DBLookupTable.preExecute (DBLookupTable.java:188) ...   <पी > ऊपर यह त्रुटि है कि मैं अपने MuleStudio कंसोल में देख रहा हूँ; हालांकि, डेटामैपर डीबी लुकअप सत्यापन कार्य के अनुसार (नीचे चित्र देखें), डीबी कनेक्शन ठीक लगता है।  
 छवि विवरण यहां दर्ज करें  
  प्रश्न:  इस त्रुटि का कारण क्या है & amp; यह त्रुटि कैसे ठीक करें?   
 
 
 ऐसा लगता है कि नए एवनपोर्ट स्टूडियो में यह समस्या नहीं है।

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