diff --git a/api/files.py b/api/files.py
index 2ec0b2c..2357be0 100644
--- a/api/files.py
+++ b/api/files.py
@@ -15,7 +15,8 @@ async def get_file_content(url):
         client = Client()
         try:
             r = await client.get(url)
-            r.raise_for_status()
+            if r.status_code != 200:
+                return None, None
             file_content = r.content
             mime_type = r.headers.get('Content-Type', '').split(';')[0].strip()
             return file_content, mime_type
diff --git a/chatgpt/ChatService.py b/chatgpt/ChatService.py
index 3e27f20..70063d2 100644
--- a/chatgpt/ChatService.py
+++ b/chatgpt/ChatService.py
@@ -410,6 +410,9 @@ class ChatService:
             return False
 
     async def upload_file(self, file_content, mime_type):
+        if not file_content or not mime_type:
+            return None
+
         width, height = None, None
         if mime_type.startswith("image/"):
             try: