diff --git a/src/main/java/com/example/demo/exception/InsufficientPermissionException.java b/src/main/java/com/example/demo/exception/InsufficientPermissionException.java
new file mode 100644
index 0000000..98e7d9b
--- /dev/null
+++ b/src/main/java/com/example/demo/exception/InsufficientPermissionException.java
@@ -0,0 +1,9 @@
+package com.example.demo.exception;
+
+public class InsufficientPermissionException extends RuntimeException {
+
+	public InsufficientPermissionException(String message) {
+		super(message);
+	}
+
+}
diff --git a/src/main/java/com/example/demo/exception/NoSessionException.java b/src/main/java/com/example/demo/exception/NoSessionException.java
new file mode 100644
index 0000000..612b627
--- /dev/null
+++ b/src/main/java/com/example/demo/exception/NoSessionException.java
@@ -0,0 +1,9 @@
+package com.example.demo.exception;
+
+public class NoSessionException extends RuntimeException {
+
+	public NoSessionException(String message) {
+		super(message);
+	}
+
+}