diff --git a/services/web/server/src/simcore_service_webserver/sockets_handlers.py b/services/web/server/src/simcore_service_webserver/sockets_handlers.py
index d5b4f4cd506..26016b2b2a2 100644
--- a/services/web/server/src/simcore_service_webserver/sockets_handlers.py
+++ b/services/web/server/src/simcore_service_webserver/sockets_handlers.py
@@ -17,7 +17,10 @@
 log = logging.getLogger(__file__)
 
 # TODO: separate API from server application!
-sio = socketio.AsyncServer(async_mode="aiohttp", logging=log)
+sio = socketio.AsyncServer(async_mode="aiohttp",
+    logger=log,
+    cors_allowed_origins='*', # FIXME: deactivate when reverse proxy issue with traefik resolved
+    engineio_logger=log)
 
 
 @sio.on("connect")
diff --git a/services/web/server/tests/integration/fixtures/celery_service.py b/services/web/server/tests/integration/fixtures/celery_service.py
index 8a51d5634ed..bad896a07b8 100644
--- a/services/web/server/tests/integration/fixtures/celery_service.py
+++ b/services/web/server/tests/integration/fixtures/celery_service.py
@@ -29,4 +29,4 @@ def wait_till_celery_responsive(url):
 
     status = celery.bin.celery.CeleryCommand.commands['status']()
     status.app = status.get_app()
-    status.run()
+    status.run() # raises celery.bin.base.Error if cannot run
diff --git a/services/web/server/tests/integration/fixtures/docker_compose.py b/services/web/server/tests/integration/fixtures/docker_compose.py
index a601d667f55..52179bb2ab9 100644
--- a/services/web/server/tests/integration/fixtures/docker_compose.py
+++ b/services/web/server/tests/integration/fixtures/docker_compose.py
@@ -4,24 +4,18 @@
     Here we can find fixtures of most of these configurations
 
 """
-
-# pylint:disable=wildcard-import
-# pylint:disable=unused-import
 # pylint:disable=unused-variable
 # pylint:disable=unused-argument
 # pylint:disable=redefined-outer-name
 
-
 import os
 import re
 import shutil
 import socket
-import subprocess
 import sys
-from collections import defaultdict
 from copy import deepcopy
 from pathlib import Path
-from typing import Dict, List, Union
+from typing import Dict, List
 
 import pytest
 import yaml