Refer to issue https://github.com/umbraco/Umbraco.Commerce.Deploy/issues/3 (logged on Umbraco.Commerce.Issues) for details - it looks like the UmbracoCommerceStoreEntityPickerValueConnector.GetPropertyEntityType method expects a Dictionary instead of a StoreEntityPickerConfiguration object.
PR incoming to address this issue, but I'm not 100% sure about backwards compatibility to Umbraco.Commerce v12.0
Refer to issue https://github.com/umbraco/Umbraco.Commerce.Deploy/issues/3 (logged on Umbraco.Commerce.Issues) for details - it looks like the
UmbracoCommerceStoreEntityPickerValueConnector.GetPropertyEntityType
method expects aDictionary
instead of aStoreEntityPickerConfiguration
object.PR incoming to address this issue, but I'm not 100% sure about backwards compatibility to Umbraco.Commerce v12.0