feat: added rate limit error pop up

Author: Prashant-Microsoft

src/backend/app_kernel.py

@@ -185,7 +185,7 @@ async def input_task_endpoint(input_task: InputTask, request: Request):
                 "error": str(e),
             },
         )
-        raise HTTPException(status_code=400, detail="Error creating plan")
+        raise HTTPException(status_code=400, detail=f"Error creating plan: {e}")
 
 
 @app.post("/api/human_feedback")

src/backend/kernel_agents/planner_agent.py

@@ -434,7 +434,13 @@ async def _create_structured_plan(
             return plan, steps
 
         except Exception as e:
-            logging.exception(f"Error creating structured plan: {e}")
+            error_message = str(e)
+            if "Rate limit is exceeded" in error_message:
+                logging.warning("Rate limit hit. Consider retrying after some delay.")
+                raise
+            else:
+                logging.exception(f"Error creating structured plan: {e}")
+        
 
             # Create a fallback dummy plan when parsing fails
             logging.info("Creating fallback dummy plan due to parsing error")

src/frontend/wwwroot/home/home.js

@@ -103,6 +103,16 @@
         })
           .then((response) => response.json())
           .then((data) => {
+            // Check if 'detail' field contains rate limit error
+            if (data.detail && data.detail.includes("Rate limit is exceeded")) {
+              notyf.error("Application temporarily unavailable due to quota limits. Please try again later.");
+              newTaskPrompt.disabled = false;
+              startTaskButton.disabled = false;
+              startTaskButton.classList.remove("is-loading");
+              hideOverlay();
+              return;
+            }
+            
             if (data.status == "Plan not created" || data.plan_id == "") {
               notyf.error("Unable to create plan for this task.");
               newTaskPrompt.disabled = false;