diff --git a/src/synchronizations/member/synchronizer.rs b/src/synchronizations/member/synchronizer.rs
index 4694ab5..92f703a 100644
--- a/src/synchronizations/member/synchronizer.rs
+++ b/src/synchronizations/member/synchronizer.rs
@@ -90,19 +90,31 @@ impl Synchronizer {
             }),
           };
 
-          let ss_get_member_by_username_res_msg = self
+          let ss_get_member_by_username_res_msg = match self
             .connection_broker
             .request(
               bpr::ss::member::SUBJECT_GET_MEMBER_BY_USERNAME,
               ss_get_member_by_username_req.encode_to_vec(),
             )
             .await
-            .expect("SUBJECT_GET_MEMBER_BY_USERNAME");
+          {
+            Ok(r) => r,
+            Err(e) => {
+              println!("bpr::ss::member::SUBJECT_GET_MEMBER_BY_USERNAME: {}", e);
+              continue;
+            }
+          };
 
-          let ss_get_member_by_username_res = bpr::ss::member::GetMemberByUsernameResponse::decode(
-            ss_get_member_by_username_res_msg.data.as_slice(),
-          )
-          .expect("GetMemberByUsernameResponse");
+          let ss_get_member_by_username_res =
+            match bpr::ss::member::GetMemberByUsernameResponse::decode(
+              ss_get_member_by_username_res_msg.data.as_slice(),
+            ) {
+              Ok(r) => r,
+              Err(e) => {
+                println!("bpr::ss::member::GetMemberByUsernameResponse: {}", e);
+                continue;
+              }
+            };
 
           if let Some(e) = ss_get_member_by_username_res.error {
             println!(
@@ -117,16 +129,19 @@ impl Synchronizer {
               Some(m) => {
                 let member_id = uuid::Uuid::from_str(m.id.as_str()).expect("uuid::Uuid");
 
-                self
-                  .member_repository
-                  .insert(
-                    &conn,
-                    &repositories::member::models::NewMember {
-                      id: u.id,
-                      member_id,
-                    },
-                  )
-                  .expect("member insert");
+                match self.member_repository.insert(
+                  &conn,
+                  &repositories::member::models::NewMember {
+                    id: u.id,
+                    member_id,
+                  },
+                ) {
+                  Ok(r) => r,
+                  Err(e) => {
+                    println!("member_repository.insert: {}", e);
+                    continue;
+                  }
+                };
               }
               None => {
                 println!("member is not exist: {}", u.site_username);