Use BufferedInputFile for incidents_export

handlers/system.py

@@ -1,7 +1,7 @@
 import asyncio
 import os
 from aiogram import F
-from aiogram.types import Message, CallbackQuery, InlineKeyboardMarkup, InlineKeyboardButton, InputFile
+from aiogram.types import Message, CallbackQuery, InlineKeyboardMarkup, InlineKeyboardButton, InputFile, BufferedInputFile
 from app import dp, cfg
 from auth import is_admin_msg
 from keyboards import (
@@ -428,20 +428,19 @@ async def incidents_export(msg: Message):
         })
     if fmt == "json":
         payload = json.dumps(data, ensure_ascii=False, indent=2)
-        bio = io.BytesIO(payload.encode("utf-8"))
-        bio.name = f"incidents_{hours}h.json"
+        file_bytes = payload.encode("utf-8")
+        fname = f"incidents_{hours}h.json"
     else:
         sio = io.StringIO()
         writer = csv.DictWriter(sio, fieldnames=["timestamp", "category", "message"])
         writer.writeheader()
         for row in data:
             writer.writerow(row)
-        bio = io.BytesIO(sio.getvalue().encode("utf-8"))
-        bio.name = f"incidents_{hours}h.csv"
-    bio.seek(0)
+        file_bytes = sio.getvalue().encode("utf-8")
+        fname = f"incidents_{hours}h.csv"
     summary = f"📤 Incidents export ({hours}h): {len(data)} rows, format {fmt}"
     await msg.answer(summary)
-    await msg.answer_document(document=InputFile(bio, filename=bio.name))
+    await msg.answer_document(document=BufferedInputFile(file_bytes, filename=fname))
 
 
 @dp.message(F.text == "🔒 SSL")