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

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

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