javax.el.ELException: Error writing 'documentView' on type$$_javassist_17

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javax.el.ELException: Error writing 'documentView' on type$$_javassist_17
at javax.el.BeanELResolver.setValue(
at javax.el.CompositeELResolver.setValue(
at com.sun.faces.el.FacesCompositeELResolver.setValue(
at org.jboss.el.parser.AstPropertySuffix.setValue(
at org.jboss.el.parser.AstValue.setValue(
at org.jboss.el.ValueExpressionImpl.setValue(

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