Update app.py

app.py

@@ -71,6 +71,10 @@ def normalize_headers(request: Request, original_url: str) -> dict:
 def format_chunk(chunk: bytes, model: str) -> bytes | str | dict:
     chunk_id = 'chatcmpl-AQ8Lzxlg8eSCB1lgVmboiXwZiexqE'
     timestamp = int(datetime.now().timestamp())
+    try:
+        content = chunk.decode('utf-8')
+    except UnicodeDecodeError:
+        content = chunk.decode('latin-1', errors='ignore')
     data = {
         "id": chunk_id,
         "object": "chat.completion.chunk",
@@ -81,7 +85,7 @@ def format_chunk(chunk: bytes, model: str) -> bytes | str | dict:
             {
                 "index": 0,
                 "delta": {
-                    "content": chunk.decode()
+                    "content": content
                 },
                 "finish_reason": None
             }