Update app.py

app.py

@@ -7,6 +7,7 @@ from fastapi import FastAPI, WebSocket, Request, status
 from fastapi.staticfiles import StaticFiles
 from fastapi.responses import FileResponse, JSONResponse
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.encoders import jsonable_encoder
 
 # Standard library
 import uvicorn
@@ -170,18 +171,18 @@ async def global_exception_handler(request: Request, exc: Exception):
         
         return JSONResponse(
             status_code=status_code,
-            content=response_body
+            content=jsonable_encoder(response_body)
         )
     
     # Generic error response
     return JSONResponse(
         status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-        content={
+        content=jsonable_encoder({
             "error": "InternalServerError",
             "message": "An unexpected error occurred. Please try again later.",
             "request_id": request_id,
             "timestamp": datetime.utcnow().isoformat()
-        }
+        })
     )
 
 # Validation error handler