Handle workflow run output null case (#1517)

skyvern-frontend/src/routes/workflows/workflowRun/WorkflowRunOutput.tsx

@@ -11,6 +11,7 @@ import { findBlockSurroundingAction } from "./workflowTimelineUtils";
 import { useWorkflowRunTimelineQuery } from "../hooks/useWorkflowRunTimelineQuery";
 import { Status } from "@/api/types";
 import { AutoResizingTextarea } from "@/components/AutoResizingTextarea/AutoResizingTextarea";
+import { isTaskVariantBlock } from "../types/workflowTypes";
 
 function WorkflowRunOutput() {
   const { data: workflowRunTimeline, isLoading: workflowRunTimelineIsLoading } =
@@ -44,16 +45,22 @@ function WorkflowRunOutput() {
   const activeBlock = getActiveBlock();
 
   const showExtractedInformation =
-    activeBlock && activeBlock.status === Status.Completed;
+    activeBlock &&
+    isTaskVariantBlock(activeBlock) &&
+    activeBlock.status === Status.Completed;
 
   const outputs = workflowRun?.outputs;
   const fileUrls = workflowRun?.downloaded_file_urls ?? [];
+
   return (
     <div className="space-y-5">
       {activeBlock ? (
         <div className="rounded bg-slate-elevation2 p-6">
           <div className="space-y-4">
             <h1 className="text-lg font-bold">Block Outputs</h1>
+            {activeBlock.output === null ? (
+              <div>This block has no outputs</div>
+            ) : isTaskVariantBlock(activeBlock) ? (
               <div className="space-y-2">
                 <h2>
                   {showExtractedInformation
@@ -85,6 +92,18 @@ function WorkflowRunOutput() {
                   />
                 )}
               </div>
+            ) : (
+              <div className="space-y-2">
+                <h2>Output</h2>
+                <CodeEditor
+                  language="json"
+                  value={JSON.stringify(activeBlock.output, null, 2)}
+                  minHeight="96px"
+                  maxHeight="200px"
+                  readOnly
+                />
+              </div>
+            )}
           </div>
         </div>
       ) : null}