Merge branch '4.4' into 5.4

* 4.4:
  Improve the local server proxy troubleshooting section
  Fix YAML example in "Defining a Service Locator" section

Author: javiereguiluz

service_container/service_subscribers_locators.rst

@@ -256,9 +256,10 @@ argument of type ``service_locator``:
         # config/services.yaml
         services:
             App\CommandBus:
-                arguments: !service_locator
-                    App\FooCommand: '@app.command_handler.foo'
-                    App\BarCommand: '@app.command_handler.bar'
+                arguments: 
+                  - !service_locator
+                      App\FooCommand: '@app.command_handler.foo'
+                      App\BarCommand: '@app.command_handler.bar'
 
     .. code-block:: xml
 

setup/symfony_server.rst

@@ -202,12 +202,15 @@ Now run this command to start the proxy:
 
     $ symfony proxy:start
 
-.. note::
-
-    Some browsers (e.g. Chrome) require to re-apply proxy settings (clicking on
-    ``Re-apply settings`` button on the ``chrome://net-internals/#proxy`` page)
-    or a full restart after starting the proxy. Otherwise, you'll see a
-    *"This webpage is not available"* error (``ERR_NAME_NOT_RESOLVED``).
+If the proxy doesn't work as explained in the following sections, check these:
+
+* Some browsers (e.g. Chrome) require to re-apply proxy settings (clicking on
+  ``Re-apply settings`` button on the ``chrome://net-internals/#proxy`` page)
+  or a full restart after starting the proxy. Otherwise, you'll see a
+  *"This webpage is not available"* error (``ERR_NAME_NOT_RESOLVED``);
+* Some Operating Systems (e.g. macOS) don't apply by default the proxy settings
+  to local hosts and domains. You may need to remove ``*.local`` and/or other
+  IP addresses from that list.
 
 Defining the Local Domain
 ~~~~~~~~~~~~~~~~~~~~~~~~~