flex.messaging.MessageException: Unable to create a new instance of type 'sample.crm.domain.customer.CommercialEstablishment'. Abstract types cannot be instantiated.

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    flex.messaging.MessageException: Unable to create a new instance of type 'flex.messaging.endpoints.RTMPEndpoint'. Types cannot be instantiated w ithout a public, no arguments constructor. at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.doCreateBean(AbstractAu towireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory$1.run(AbstractAutowireC apableBeanFactory.java:412)

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    Root Cause Analysis

    1. flex.messaging.MessageException

      Unable to create a new instance of type 'sample.crm.domain.customer.CommercialEstablishment'. Abstract types cannot be instantiated.

      at flex.messaging.util.ClassUtil.createDefaultInstance()
    2. BlazeDS Core Library
      AbstractProxy.createInstance
      1. flex.messaging.util.ClassUtil.createDefaultInstance(ClassUtil.java:161)
      2. flex.messaging.io.AbstractProxy.createInstanceFromClassName(AbstractProxy.java:102)
      3. flex.messaging.io.AbstractProxy.createInstance(AbstractProxy.java:122)
      3 frames
    3. org.springframework.flex
      MessageBrokerFactoryBean.afterPropertiesSet
      1. org.springframework.flex.core.io.SpringPropertyProxy.proxyFor(SpringPropertyProxy.java:78)
      2. org.springframework.flex.core.io.AbstractAmfConversionServiceConfigProcessor.registerAmfProxies(AbstractAmfConversionServiceConfigProcessor.java:107)
      3. org.springframework.flex.core.io.AbstractAmfConversionServiceConfigProcessor.processAfterStartup(AbstractAmfConversionServiceConfigProcessor.java:68)
      4. org.springframework.flex.core.MessageBrokerFactoryBean.processAfterStart(MessageBrokerFactoryBean.java:315)
      5. org.springframework.flex.core.MessageBrokerFactoryBean.afterPropertiesSet(MessageBrokerFactoryBean.java:177)
      5 frames