Fix maplayer manager error

arches/app/permissions/arches_permission_base.py

@@ -585,6 +585,7 @@ def get_all_default_permissions(self, model: Model = None):
         if (
             not default_permissions_settings
             or model is None
+            or hasattr(model, "graph_id") is False
             or str(model.graph_id) not in default_permissions_settings
         ):
             return []

releases/7.6.1.md

@@ -0,0 +1,62 @@
+Arches 7.6.1 Release Notes
+--------------------------
+
+### Bug Fixes and Enhancements
+
+- Fixes bug causing the map layer manager to fail if a system uses DEFAULT_PERMISSIONS setting #[115522](https://github.com/archesproject/arches/issues/11522)
+
+### Dependency changes:
+```
+Python:
+    Upgraded:
+        None
+
+JavaScript:
+    Upgraded:
+        none
+```
+
+### Upgrading Arches
+
+1. Upgrade to version 7.6.0 before proceeding by following the upgrade process in the [Version 7.6.0 release notes](https://github.com/archesproject/arches/blob/dev/7.6.x/releases/7.6.0.md)
+
+2. Upgrade to Arches 7.6.1
+    ```
+    pip install --upgrade arches==7.6.1
+    ```
+
+3. Update the JavaScript dependencies and devDependencies:
+    In the project's `package.json` file change arches from `stable/7.6.0` to `stable/7.6.1`:
+    ```    
+        "dependencies": {
+            "arches": "archesproject/arches#stable/7.6.1",
+        },
+        "devDependencies": {
+            "arches-dev-dependencies": "archesproject/arches-dev-dependencies#stable/7.6.1"
+        }
+    ```
+    In in your terminal navigate to the directory with your project's package.json file. Then run:
+
+        yarn install
+
+
+4. Start your application server in a separate terminal if it's not already running. Your webpack build will not complete without your application server running.
+
+5. In a different terminal navigate to the directory with your project's package.json file, run `npm start` or `npm run build_development`. This will generate your `media/build` directory.
+   - If running your project in development:
+     -  `npm start` will build the frontend of the application and then start a webpack development server
+      - `npm run build_development` will build a development bundle for the frontend assests of the application -- this should complete in less than 2 minutes
+    - If running your project in production:
+      - `npm run build_production` This builds a production bundle. **takes up to 2hrs depending on resources**
+      - Alternatively you can `cd ..` up a directory and run `python manage.py build_production`. This will create a production bundle of frontend assessts and also call `collectstatic`.
+
+
+6. If you are running Arches on Apache, be sure to run:
+
+    ```
+    collectstatic
+    ```
+    and restart your server:
+    ```
+    sudo service apache2 reload
+    ```