diff --git a/docs/admin/settings/settings_outgoing.rst b/docs/admin/settings/settings_outgoing.rst
index 96b3466cd..c912c64fa 100644
--- a/docs/admin/settings/settings_outgoing.rst
+++ b/docs/admin/settings/settings_outgoing.rst
@@ -37,7 +37,7 @@ Communication with search engines.
      # Uncomment below if you want to make multiple request in parallel
      # through all the proxies at once:
      #
-     #  proxy_request_redundancy: 10
+     #  proxy_request_redundancy: 4
      #
      # Extra seconds to add in order to account for the time taken by the proxy
      #
diff --git a/searx/network/client.py b/searx/network/client.py
index f68248976..699a2cc4d 100644
--- a/searx/network/client.py
+++ b/searx/network/client.py
@@ -207,16 +207,16 @@ class AsyncParallelTransport(httpx.AsyncBaseTransport):
         network_logger: logging.Logger,
     ) -> None:
         """Init the parallel transport using a list of base `transports`."""
+        self._logger = network_logger or logger
         self._transports = list(transports)
         if len(self._transports) == 0:
             msg = "Got an empty list of (proxy) transports."
             raise ValueError(msg)
         if proxy_request_redundancy < 1:
-            logger.warning("Invalid proxy_request_redundancy specified: %d", proxy_request_redundancy)
+            self._logger.warning("Invalid proxy_request_redundancy specified: %d", proxy_request_redundancy)
             proxy_request_redundancy = 1
         self._proxy_request_redundancy = proxy_request_redundancy
         self._index = random.randrange(len(self._transports))  # noqa: S311
-        self._logger = network_logger or logger
 
     async def handle_async_request(
         self,
@@ -258,7 +258,7 @@ class AsyncParallelTransport(httpx.AsyncBaseTransport):
                     if not result.is_error:
                         response = result
                     elif result.status_code == 404 and response is None:
-                        response = result
+                        error_response = response = result
                     elif not error_response:
                         self._logger.warning("Error response: %s for %s", result.status_code, request.url)
                         error_response = result
diff --git a/searx/network/network.py b/searx/network/network.py
index 4941349b5..9613384c3 100644
--- a/searx/network/network.py
+++ b/searx/network/network.py
@@ -147,7 +147,8 @@ class Network:
                 else:
                     yield pattern, tuple(proxy_urls)
         else:
-            raise ValueError("`proxies` need to be either a string or a patthern to url dictionary.")
+            msg = "`proxies` need to be either a string or a patthern to url dictionary."
+            raise ValueError(msg)
 
     async def log_response(self, response: httpx.Response):
         request = response.request
@@ -351,6 +352,7 @@ def initialize(settings_engines=None, settings_outgoing=None):
     }
 
     def new_network(params, logger_name=None):
+        nonlocal default_params
         result = {}
         result.update(default_params)
         result.update(params)
@@ -358,7 +360,8 @@ def initialize(settings_engines=None, settings_outgoing=None):
             result['logger_name'] = logger_name
         return Network(**result)
 
-    def iter_engine_networks():
+    def iter_networks():
+        nonlocal settings_engines
         for engine_spec in settings_engines:
             engine_name = engine_spec['name']
             engine = engines.get(engine_name)
@@ -379,7 +382,7 @@ def initialize(settings_engines=None, settings_outgoing=None):
         NETWORKS[network_name] = new_network(network, logger_name=network_name)
 
     # define networks from engines.[i].network (except references)
-    for engine_name, engine, network in iter_engine_networks():
+    for engine_name, engine, network in iter_networks():
         if network is None:
             network = {}
             for attribute_name, attribute_value in default_params.items():
@@ -392,7 +395,7 @@ def initialize(settings_engines=None, settings_outgoing=None):
             NETWORKS[engine_name] = new_network(network, logger_name=engine_name)
 
     # define networks from engines.[i].network (references)
-    for engine_name, engine, network in iter_engine_networks():
+    for engine_name, engine, network in iter_networks():
         if isinstance(network, str):
             NETWORKS[engine_name] = NETWORKS[network]
 
diff --git a/searx/settings.yml b/searx/settings.yml
index 620cfb759..1743d2554 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -193,7 +193,7 @@ outgoing:
   # Uncomment below if you want to make multiple request in parallel
   # through all the proxies at once:
   #
-  #  proxy_request_redundancy: 10
+  #  proxy_request_redundancy: 4
   #
   # Extra seconds to add in order to account for the time taken by the proxy
   #