DHFPROD-8141: HC 5.6.0 Mapping test capabilities do not handle Staging documents without envelope

Author: rolonPablo

marklogic-data-hub-central/ui/src/components/entities/mapping/mapping-step-detail/mapping-step-detail.tsx

@@ -265,7 +265,7 @@ const MappingStepDetail: React.FC = () => {
           }
         }
         let nestedDoc: any = [];
-        let docRoot = mappingStep.sourceRecordScope === "entireRecord" ?  parsedDoc : parsedDoc["envelope"]["instance"] ;
+        let docRoot = mappingStep.sourceRecordScope === "entireRecord" || !(parsedDoc.envelope && parsedDoc.envelope.instance) ? parsedDoc : parsedDoc.envelope.instance;
         let sDta = generateNestedDataSource(docRoot, nestedDoc);
         setSourceData([]);
         setSourceData([...sDta]);
@@ -278,7 +278,7 @@ const MappingStepDetail: React.FC = () => {
     } catch (error)  {
       setIsLoading(false);
       setDocNotFound(true);
-      if (error.response.data.message.includes("Interceptor execution failed")) {
+      if (error.response && error.response.data.message.includes("Interceptor execution failed")) {
         setInterceptorExecutionError(error.response.data.message);
       } else {
         let message = error;//.response.data.message;