Fix tracebacking services default command

CHANGELOG.md

@@ -2,8 +2,9 @@
 
 ## main branch
 
-- Remove `AMP_ENABLED` setting since it services no real purpose and
+- [Fix] Remove `AMP_ENABLED` setting since it services no real purpose and
   erroring out on setting it would make it even less useful (Griatch).
+- [Fix] `services` command with no args would traceback (regression) (Griatch)
 - [Feature][pull3412]: Make it possible to add custom webclient css in
   `webclient/css/custom.css`, same as for website (InspectorCaracal)
 - Doc fixes (InspectorCaracal, Griatch)

evennia/commands/default/system.py

@@ -13,10 +13,9 @@ import time
 import traceback
 
 import django
+import evennia
 import twisted
 from django.conf import settings
-
-import evennia
 from evennia.accounts.models import AccountDB
 from evennia.scripts.taskhandler import TaskHandlerTask
 from evennia.utils import gametime, logger, search, utils
@@ -574,7 +573,7 @@ class CmdService(COMMAND_DEFAULT_CLASS):
             return
 
         # get all services
-        service_collection = evennia.SESSION_HANDLER.server.services
+        service_collection = evennia.EVENNIA_SERVER_SERVICE
 
         if not switches or switches[0] == "list":
             # Just display the list of installed services and their