make better error handling

app.py

@@ -38,7 +38,7 @@ async def rate_limit_exceeded(request: Request, exc):
     return JSONResponse(
           status_code=429,
            content={
-                "Error": "Too Many Requests ,please just try 3 times per hour",
+                "detail": "Too Many Requests ,please just try 3 times per hour",
                 "status": 0
             })
 
@@ -77,7 +77,7 @@ async def image_step1(request: Request,image_file: UploadFile = File(...),backgr
 
         if (output_step1[-1] == 0):
             return {
-                "Error": output_step1[0],
+                "detail": output_step1[0],
                 "status": output_step1[-1]
             }