diff --git a/servers/fastapi/api/v1/ppt/endpoints/outlines.py b/servers/fastapi/api/v1/ppt/endpoints/outlines.py
index 0638543e..b0ec47af 100644
--- a/servers/fastapi/api/v1/ppt/endpoints/outlines.py
+++ b/servers/fastapi/api/v1/ppt/endpoints/outlines.py
@@ -68,7 +68,15 @@ async def stream_outlines(
                 ).to_string()
                 presentation_outlines_text += chunk
 
-            presentation_outlines_json = json.loads(presentation_outlines_text)
+            try:
+                presentation_outlines_json = json.loads(presentation_outlines_text)
+            except Exception as e:
+                print(e)
+                raise HTTPException(
+                    status_code=400,
+                    detail="Failed to generate presentation outlines. Please try again.",
+                )
+
             presentation_outlines = PresentationOutlineModel(
                 **presentation_outlines_json
             )
diff --git a/servers/fastapi/api/v1/ppt/endpoints/presentation.py b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
index 215f4b4a..5b4589a2 100644
--- a/servers/fastapi/api/v1/ppt/endpoints/presentation.py
+++ b/servers/fastapi/api/v1/ppt/endpoints/presentation.py
@@ -355,7 +355,14 @@ async def generate_presentation_api(
         ):
             presentation_outlines_text += chunk
 
-    presentation_outlines_json = json.loads(presentation_outlines_text)
+    try:
+        presentation_outlines_json = json.loads(presentation_outlines_text)
+    except Exception as e:
+        print(e)
+        raise HTTPException(
+            status_code=400,
+            detail="Failed to generate presentation outlines. Please try again.",
+        )
     presentation_outlines = PresentationOutlineModel(**presentation_outlines_json)
     outlines = presentation_outlines.slides[:n_slides]
     total_outlines = len(outlines)
diff --git a/servers/fastapi/app_mcp/wrapper/generate_outline.py b/servers/fastapi/app_mcp/wrapper/generate_outline.py
index 0c2d88a7..c2efdc38 100644
--- a/servers/fastapi/app_mcp/wrapper/generate_outline.py
+++ b/servers/fastapi/app_mcp/wrapper/generate_outline.py
@@ -1,5 +1,6 @@
 import json
 import os
+from fastapi import HTTPException
 from typing import Dict, Any, Optional, List, Annotated
 from models.presentation_outline_model import PresentationOutlineModel
 from utils.llm_calls.generate_presentation_outlines import generate_ppt_outline
@@ -63,8 +64,17 @@ async def generate_outline(
             await asyncio.sleep(0)
             presentation_outlines_text += chunk
 
-        presentation_outlines_json = json.loads(presentation_outlines_text)
-        presentation_outlines = PresentationOutlineModel(**presentation_outlines_json)
+        try:
+            presentation_outlines_json = json.loads(presentation_outlines_text)
+            presentation_outlines = PresentationOutlineModel(
+                **presentation_outlines_json
+            )
+        except Exception as e:
+            print(e)
+            raise HTTPException(
+                status_code=400,
+                detail="Failed to generate presentation outlines. Please try again.",
+            )
 
     # Truncate slides to n_slides
     presentation_outlines.slides = presentation_outlines.slides[:n_slides]