diff --git a/crates/provider/src/handlers/function_get.rs b/crates/provider/src/handlers/function_get.rs
index d8fa2e4..b91e559 100644
--- a/crates/provider/src/handlers/function_get.rs
+++ b/crates/provider/src/handlers/function_get.rs
@@ -28,7 +28,7 @@ pub async fn get_function(function_name: &str, namespace: &str) -> Result<Functi
     let container = ContainerdManager::load_container(cid, namespace)
         .await
         .map_err(|e| FunctionError::FunctionNotFound(e.to_string()))?
-        .unwrap();
+        .unwrap_or_default();
 
     let container_name = container.id.to_string();
     let image = container.image.clone();
diff --git a/crates/service/src/containerd_manager.rs b/crates/service/src/containerd_manager.rs
index 845c762..794006d 100644
--- a/crates/service/src/containerd_manager.rs
+++ b/crates/service/src/containerd_manager.rs
@@ -492,8 +492,8 @@ impl ContainerdManager {
 
     pub fn get_address(cid: &str) -> String {
         let map = GLOBAL_NETNS_MAP.read().unwrap();
-        let config = map.get(cid).unwrap();
-        config.get_address()
+        let addr = map.get(cid).map(|net_conf| net_conf.get_address());
+        addr.unwrap_or_default()
     }
 
     fn remove_container_network_config(cid: &str) {