org.drools.RuntimeDroolsException: Unable to load dialect ''

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    Root Cause Analysis

    1. java.lang.RuntimeException

      The Eclipse JDT Core jar is not in the classpath

    2. org.drools.rule
      2 frames
    3. org.drools.compiler
      1. org.drools.compiler.PackageBuilderConfiguration.addDialect(
      2. org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(
      3. org.drools.compiler.PackageBuilderConfiguration.init(
      4. org.drools.compiler.PackageBuilderConfiguration.<init>(
      5. org.drools.compiler.PackageBuilder.<init>(
      6. org.drools.compiler.PackageBuilder.<init>(
      6 frames
    4. org.drools.builder
      1. org.drools.builder.impl.KnowledgeBuilderProviderImpl.newKnowledgeBuilder(
      2. org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(
      2 frames
    5. com.sample
      1. com.sample.TestExample.readKnowledgeBase(
      2. com.sample.TestExample.ProductClassHolder(
      3. com.sample.TestExample.main(
      3 frames