diff --git a/src/main/java/com/example/cosmos_serversb/entities/Group.java b/src/main/java/com/example/cosmos_serversb/entities/Group.java
index 8ef2dee..a29e9a1 100644
--- a/src/main/java/com/example/cosmos_serversb/entities/Group.java
+++ b/src/main/java/com/example/cosmos_serversb/entities/Group.java
@@ -64,12 +64,15 @@
     public void addRequests(Request request){
         requests.add(request);
     }
-
+/*
     public ArrayList<Request> getRequestsList(){
         ArrayList<Request> list = new ArrayList<Request>(getRequests());
         return list;
     }
 
+ */
+
+
     /*メンバー*/
     //public ArrayList<User> getMembersList(){
     //    return null;
diff --git a/src/main/java/com/example/cosmos_serversb/models/Groups.java b/src/main/java/com/example/cosmos_serversb/models/Groups.java
index f779544..be52147 100644
--- a/src/main/java/com/example/cosmos_serversb/models/Groups.java
+++ b/src/main/java/com/example/cosmos_serversb/models/Groups.java
@@ -43,7 +43,7 @@
     }
 
     private Groups(){
-
+        setUp();
     }
 
     public static Groups getInstance(){
diff --git a/src/main/java/com/example/cosmos_serversb/models/Users.java b/src/main/java/com/example/cosmos_serversb/models/Users.java
index a3d0914..8ccc4c5 100644
--- a/src/main/java/com/example/cosmos_serversb/models/Users.java
+++ b/src/main/java/com/example/cosmos_serversb/models/Users.java
@@ -40,6 +40,7 @@
     }
 
     private Users() {
+        setUp();
     }
 
     public static Users getInstance() {
diff --git a/src/main/resources/Group.hbm.xml b/src/main/resources/Group.hbm.xml
index a42e69f..d5733ed 100644
--- a/src/main/resources/Group.hbm.xml
+++ b/src/main/resources/Group.hbm.xml
@@ -18,7 +18,7 @@
         <property name="uri" column="URI"/>
         <property name="name" column="NAME"/>
         <set name = "requests" cascade="all">
-            <key column = "GID"/>
+            <key column = "GID" not-null="false"/>
             <one-to-many class="Request"/>
         </set>
     </class>