Update.

tests/test_file_browser.py

@@ -4,6 +4,7 @@ from pathlib import Path
 import json
 import datetime
 import aiohttp
+from aiohttp import web
 from aiohttp.test_utils import TestClient
 from aiohttp_session import setup as setup_session
 from aiohttp_session.cookie_storage import EncryptedCookieStorage
@@ -389,8 +390,9 @@ async def test_file_browser_download_file(logged_in_client: TestClient, file_ser
 
 @pytest.mark.asyncio
 async def test_file_browser_download_file_not_found(logged_in_client: TestClient):
-    resp = await logged_in_client.get("/files/download/nonexistent_web.txt", allow_redirects=False)
-    assert resp.status == 404
+    response = await logged_in_client.get("/files/download/nonexistent_web.txt", allow_redirects=False)
+    assert response.status == 404
+    assert "File not found" in await response.text()
 
 @pytest.mark.asyncio
 async def test_file_browser_delete_file(logged_in_client: TestClient, file_service_instance, temp_user_files_dir):