diff --git a/app/src/main/java/com/example/nemophila/entities/ErrorType.java b/app/src/main/java/com/example/nemophila/entities/ErrorType.java
index 4ab24d7..8d40df5 100644
--- a/app/src/main/java/com/example/nemophila/entities/ErrorType.java
+++ b/app/src/main/java/com/example/nemophila/entities/ErrorType.java
@@ -5,7 +5,8 @@
     NetworkError("ネットワークエラー"),
     InvalidToken("トークンが不一致"),
     UnknownError("不明なエラー"),
-    ResponseNoyFound("リソースが見つかりません");
+    ResponseNotFound("リソースが見つかりません"),
+    ServerError("サーバーエラー");
 
     private final String text;
 
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/AccountViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/AccountViewModel.java
index 5f3d05b..8b5aed5 100644
--- a/app/src/main/java/com/example/nemophila/viewmodels/AccountViewModel.java
+++ b/app/src/main/java/com/example/nemophila/viewmodels/AccountViewModel.java
@@ -1,12 +1,9 @@
 package com.example.nemophila.viewmodels;
 
 import android.util.Log;
-import android.widget.TextView;
 
-import com.example.nemophila.R;
 import com.example.nemophila.entities.Account;
 import com.example.nemophila.entities.AccountJson;
-import com.example.nemophila.entities.AccountNameJson;
 import com.example.nemophila.entities.ErrorType;
 import com.example.nemophila.entities.Post;
 import com.example.nemophila.entities.PostJson;
@@ -284,11 +281,13 @@
     private String parseStatusCode(Integer stats) {
         switch (stats) {
             case 404:
-                return ErrorType.ResponseNoyFound.getText();
+                return ErrorType.ResponseNotFound.getText();
             case 401:
                 return ErrorType.InvalidToken.getText();
             case 400:
                 return ErrorType.ResponseError.getText();
+            case 500:
+                return ErrorType.ServerError.getText();
             default:
                 return ErrorType.UnknownError.getText();
         }
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/FriendViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/FriendViewModel.java
index 13e1bf2..0f5e67a 100644
--- a/app/src/main/java/com/example/nemophila/viewmodels/FriendViewModel.java
+++ b/app/src/main/java/com/example/nemophila/viewmodels/FriendViewModel.java
@@ -5,9 +5,6 @@
 
 import com.example.nemophila.entities.AccountNameJson;
 import com.example.nemophila.entities.ErrorType;
-import com.example.nemophila.entities.Post;
-import com.example.nemophila.entities.PostJson;
-import com.example.nemophila.resources.AccountsRest;
 import com.example.nemophila.resources.FriendsRest;
 
 import java.util.ArrayList;
@@ -279,11 +276,13 @@
     private String parseStatusCode(Integer stats) {
         switch (stats) {
             case 404:
-                return ErrorType.ResponseNoyFound.getText();
+                return ErrorType.ResponseNotFound.getText();
             case 401:
                 return ErrorType.InvalidToken.getText();
             case 400:
                 return ErrorType.ResponseError.getText();
+            case 500:
+                return ErrorType.ServerError.getText();
             default:
                 return ErrorType.UnknownError.getText();
         }
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/PostsViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/PostsViewModel.java
index 9229454..d418ed8 100644
--- a/app/src/main/java/com/example/nemophila/viewmodels/PostsViewModel.java
+++ b/app/src/main/java/com/example/nemophila/viewmodels/PostsViewModel.java
@@ -153,11 +153,13 @@
     private String parseStatusCode(Integer stats) {
         switch (stats) {
             case 404:
-                return ErrorType.ResponseNoyFound.getText();
+                return ErrorType.ResponseNotFound.getText();
             case 401:
                 return ErrorType.InvalidToken.getText();
             case 400:
                 return ErrorType.ResponseError.getText();
+            case 500:
+                return ErrorType.ServerError.getText();
             default:
                 return ErrorType.UnknownError.getText();
         }
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
index e5e8b46..90e6cb0 100644
--- a/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
+++ b/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
@@ -2,16 +2,12 @@
 
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.ViewModel;
 
 import com.example.nemophila.entities.ErrorType;
 import com.example.nemophila.entities.Shop;
 import com.example.nemophila.resources.ShopsRest;
 import com.google.android.gms.maps.model.Marker;
 
-import java.io.IOError;
-import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 
@@ -187,11 +183,13 @@
     private String parseStatusCode(Integer stats) {
         switch (stats) {
             case 404:
-                return ErrorType.ResponseNoyFound.getText();
+                return ErrorType.ResponseNotFound.getText();
             case 401:
                 return ErrorType.InvalidToken.getText();
             case 400:
                 return ErrorType.ResponseError.getText();
+            case 500:
+                return ErrorType.ServerError.getText();
             default:
                 return ErrorType.UnknownError.getText();
         }