Se encontró más de un elemento MessageEncodingBindingElement en los parámetros BindingParameter de BindingContext. La causa suele ser que hay varios elementos MessageEncodingBindingElement en un enlace CustomBinding. Quite todos estos elementos menos uno.

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More than one MessageEncodingBindingElement was found in the BindingParameters of the BindingContext. This usually is caused by having multiple MessageEncodingBindingElements in a CustomBinding. Remove all but one of these elements.

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