Fix logit processor bugs (#427)

python/sglang/srt/utils.py

@@ -1,3 +1,5 @@
+"""Common utilities."""
+
 import base64
 import os
 import random
@@ -13,6 +15,7 @@ import numpy as np
 import pydantic
 import requests
 import torch
+from fastapi.responses import JSONResponse
 from packaging import version as pkg_version
 from pydantic import BaseModel
 from starlette.middleware.base import BaseHTTPMiddleware
@@ -303,6 +306,7 @@ class APIKeyValidatorMiddleware(BaseHTTPMiddleware):
         response = await call_next(request)
         return response
 
+
 # FIXME: Remove this once we drop support for pydantic 1.x
 IS_PYDANTIC_1 = int(pydantic.VERSION.split(".")[0]) == 1
 
@@ -310,4 +314,4 @@ IS_PYDANTIC_1 = int(pydantic.VERSION.split(".")[0]) == 1
 def jsonify_pydantic_model(obj: BaseModel):
     if IS_PYDANTIC_1:
         return obj.json(ensure_ascii=False)
-    return obj.model_dump_json()
+    return obj.model_dump_json()