Mac app - Cannot save the changes made at Device > Settings
## Observed behavior
Nothing happens when I click the 'Save changes' button at Device > Settings

## Expected behavior
All changes made should be saved.

## Steps to reproduce the issue
1. Install the [v0.16.0-beta1](https://github.com/learningequality/kolibri/releases/tag/v0.16.0-beta1) 
2. Go to Device > Settings
3. Click the 'Save changes' button

## Video

https://github.com/learningequality/kolibri/assets/79847249/4c695726-8a5a-4250-b9ca-25583e5762ac

## Logs

[logs.zip](https://github.com/learningequality/kolibri/files/12309862/logs.zip)

## Usage Details
Kolibri 0.16.0b1
MacOS Catalina version 10.15.7
diff --git a/kolibri/plugins/utils/__init__.py b/kolibri/plugins/utils/__init__.py
index c5147a407e..64b7eac109 100644
--- a/kolibri/plugins/utils/__init__.py
+++ b/kolibri/plugins/utils/__init__.py
@@ -474,7 +474,7 @@ def check_plugin_config_file_location(version):
 def iterate_plugins():
     # Use to dedupe plugins
     plugin_ids = set()
-    for entry_point in entry_points()["kolibri.plugins"]:
+    for entry_point in entry_points().get("kolibri.plugins", []):
         name = entry_point.name
         if name not in plugin_ids:
             plugin_ids.add(name)
['kolibri/plugins/utils/__init__.py']