mgmt, web, fix possible NPE (Azure#33677)

Author: weidongxu-microsoft

sdk/resourcemanager/azure-resourcemanager-appservice/CHANGELOG.md

@@ -2,13 +2,10 @@
 
 ## 2.25.0-beta.1 (Unreleased)
 
-### Features Added
-
-### Breaking Changes
-
 ### Bugs Fixed
 
-### Other Changes
+- Fixed potential `NullPointerException`, when query tag on `WebApp` and `FunctionApp`. 
+
 
 ## 2.24.0 (2023-02-17)
 

sdk/resourcemanager/azure-resourcemanager-appservice/src/main/java/com/azure/resourcemanager/appservice/implementation/WebSiteBaseImpl.java

@@ -236,7 +236,11 @@ public Region region() {
 
     @Override
     public Map<String, String> tags() {
-        return Collections.unmodifiableMap(innerModel().tags());
+        if (innerModel() == null || innerModel().tags() == null) {
+            return Collections.emptyMap();
+        } else {
+            return Collections.unmodifiableMap(innerModel().tags());
+        }
     }
 
     @Override