diff --git a/.github/workflows/build_docker.yml b/.github/workflows/build_docker.yml
index 22d1c75..9fad0bc 100644
--- a/.github/workflows/build_docker.yml
+++ b/.github/workflows/build_docker.yml
@@ -37,7 +37,7 @@ jobs:
           images: lanqian528/chat2api
           tags: |
             type=raw,value=latest,enable={{is_default_branch}}
-            type=raw,value=v1.1.2
+            type=raw,value=v1.1.3
 
       - name: Build and push
         uses: docker/build-push-action@v5
diff --git a/chatgpt/ChatService.py b/chatgpt/ChatService.py
index 531cd98..3214026 100644
--- a/chatgpt/ChatService.py
+++ b/chatgpt/ChatService.py
@@ -175,7 +175,11 @@ class ChatService:
             raise HTTPException(status_code=500, detail=str(e))
 
     async def prepare_send_conversation(self):
-        chat_messages, self.prompt_tokens = await api_messages_to_chat(self, self.api_messages)
+        try:
+            chat_messages, self.prompt_tokens = await api_messages_to_chat(self, self.api_messages)
+        except Exception as e:
+            logger.error(f"Failed to format messages: {str(e)}")
+            raise HTTPException(status_code=400, detail="Failed to format messages.")
         self.chat_headers = self.base_headers.copy()
         self.chat_headers.update({
             'Accept': 'text/event-stream',
diff --git a/chatgpt/chatFormat.py b/chatgpt/chatFormat.py
index 2436bf8..872e7e1 100644
--- a/chatgpt/chatFormat.py
+++ b/chatgpt/chatFormat.py
@@ -268,7 +268,7 @@ async def api_messages_to_chat(service, api_messages):
                                 "height": height
                             })
                         else:
-                            file_tokens += file_size
+                            file_tokens += file_size // 1000
                             attachments.append({
                                 "id": file_id,
                                 "size": file_size,
diff --git a/chatgpt/proofofWork.py b/chatgpt/proofofWork.py
index 0885cb7..5ff1199 100644
--- a/chatgpt/proofofWork.py
+++ b/chatgpt/proofofWork.py
@@ -295,11 +295,7 @@ async def get_dpl(service):
     if int(time.time()) - cached_time < 15 * 60:
         return True
     headers = service.base_headers.copy()
-    if len(cached_scripts) == 0:
-        cached_scripts.append(
-            "https://cdn.oaistatic.com/_next/static/cXh69klOLzS0Gy2joLDRS/_ssgManifest.js?dpl=453ebaec0d44c2decab71692e1bfe39be35a24b3")
-        cached_dpl = "453ebaec0d44c2decab71692e1bfe39be35a24b3"
-        cached_time = int(time.time())
+    cached_scripts.clear()
     try:
         if conversation_only:
             return True
@@ -307,8 +303,15 @@ async def get_dpl(service):
         r.raise_for_status()
         parser = ScriptSrcParser()
         parser.feed(r.text)
-        return True
+        if len(cached_scripts) == 0:
+            raise Exception("No scripts found")
+        else:
+            return True
     except Exception:
+        cached_scripts.append(
+            "https://cdn.oaistatic.com/_next/static/cXh69klOLzS0Gy2joLDRS/_ssgManifest.js?dpl=453ebaec0d44c2decab71692e1bfe39be35a24b3")
+        cached_dpl = "453ebaec0d44c2decab71692e1bfe39be35a24b3"
+        cached_time = int(time.time())
         return False
 
 
diff --git a/chatgpt/refreshToken.py b/chatgpt/refreshToken.py
index 0d2dc50..7220ecc 100644
--- a/chatgpt/refreshToken.py
+++ b/chatgpt/refreshToken.py
@@ -2,7 +2,6 @@ import json
 import os
 import random
 import time
-from functools import cache
 
 from fastapi import HTTPException
 
@@ -17,14 +16,11 @@ REFRESH_MAP_FILE = os.path.join(DATA_FOLDER, "refresh_map.json")
 if not os.path.exists(DATA_FOLDER):
     os.makedirs(DATA_FOLDER)
 
-
-@cache
-def load_refresh_map():
-    if os.path.exists(REFRESH_MAP_FILE):
-        with open(REFRESH_MAP_FILE, "r") as file:
-            return json.load(file)
-    else:
-        return {}
+if os.path.exists(REFRESH_MAP_FILE):
+    with open(REFRESH_MAP_FILE, "r") as file:
+        refresh_map = json.load(file)
+else:
+    refresh_map = {}
 
 
 def save_refresh_map(refresh_map):
@@ -33,8 +29,7 @@ def save_refresh_map(refresh_map):
 
 
 async def rt2ac(refresh_token):
-    refresh_map = load_refresh_map()
-    if refresh_token in refresh_map and int(time.time()) - refresh_map.get(refresh_token, {}).get("timestamp", 0) < 24 * 60 * 60:
+    if refresh_token in refresh_map and int(time.time()) - refresh_map.get(refresh_token, {}).get("timestamp", 0) < 2 * 24 * 60 * 60:
         access_token = refresh_map[refresh_token]["token"]
         logger.info(f"refresh_token -> access_token from cache")
         return access_token
diff --git a/utils/authorization.py b/utils/authorization.py
index 35e9ab9..681f03d 100644
--- a/utils/authorization.py
+++ b/utils/authorization.py
@@ -14,17 +14,19 @@ token_list = []
 
 DATA_FOLDER = "data"
 TOKENS_FILE = os.path.join(DATA_FOLDER, "token.txt")
+
 if not os.path.exists(DATA_FOLDER):
     os.makedirs(DATA_FOLDER)
 
-if os.path.exists("data/token.txt"):
-    with open("data/token.txt", "r", encoding="utf-8") as f:
+if os.path.exists(TOKENS_FILE):
+    with open(TOKENS_FILE, "r", encoding="utf-8") as f:
         for line in f:
             if line.strip() and not line.startswith("#"):
                 token_list.append(line.strip())
 else:
-    with open("data/token.txt", "w", encoding="utf-8") as f:
+    with open(TOKENS_FILE, "w", encoding="utf-8") as f:
         pass
+
 if token_list:
     logger.info(f"Token list count: {len(token_list)}")
 
diff --git a/utils/config.py b/utils/config.py
index cdb9f90..29010b6 100644
--- a/utils/config.py
+++ b/utils/config.py
@@ -35,7 +35,7 @@ arkose_token_url_list = arkose_token_url.split(',') if arkose_token_url else []
 proxy_url_list = proxy_url.split(',') if proxy_url else []
 
 logger.info("-" * 60)
-logger.info("Chat2Api v1.1.2 | https://github.com/lanqian528/chat2api")
+logger.info("Chat2Api v1.1.3 | https://github.com/lanqian528/chat2api")
 logger.info("-" * 60)
 logger.info("Environment variables:")
 logger.info("API_PREFIX:        " + str(api_prefix))