i get error for send marketing email 

getting this error 

Flow action received with invalid properties. Customer email does not exist for customer id=7803504361804: {"status":400,"response_body":"{\"message\":\"Flow action received with invalid properties. Customer email does not exist for customer id=7803504361804\"}","verb":"POST","url":"https://email.sfe.shopifyinternal.com/flow/action","request_body":"{\"shop_id\":78734393676,\"shopify_domain\":\"0733ee-3.myshopify.com\",\"properties\":{\"abandonment_id\":\"gid:\\/\\/shopify\\/Abandonment\\/1712097558860\",\"customer_id\":\"gid:\\/\\/shopify\\/Customer\\/7803504361804\",\"marketing_activity_id\":\"gid:\\/\\/shopify\\/MarketingActivity\\/167948910924\"},\"action_run_id\":\"4ae19fa10290224aef86afd64b45fdfc684aefc7\",\"action_definition_id\":\"Send Marketing Email\",\"step_reference\":\"29154ae6edfd20654bdf7106848d72ff45e7f4ebe6922ca027c0ae037242b2b9\"}"}