return JSON output in the chat

packages/server/src/index.ts

@@ -980,7 +980,7 @@ export class App {
 
             if (nodeToExecuteData.instance) checkMemorySessionId(nodeToExecuteData.instance, chatId)
 
-            const result = isStreamValid
+            let result = isStreamValid
                 ? await nodeInstance.run(nodeToExecuteData, incomingInput.question, {
                       chatHistory: incomingInput.history,
                       socketIO,
@@ -998,7 +998,10 @@ export class App {
                       analytic: chatflow.analytic
                   })
 
+            result = typeof result === 'string' ? { text: result } : result
+
             logger.debug(`[server]: Finished running ${nodeToExecuteData.label} (${nodeToExecuteData.id})`)
+
             return res.json(result)
         } catch (e: any) {
             logger.error('[server]: Error:', e)