diff --git a/login.go b/login.go
index ca5e7aa..e3cf191 100644
--- a/login.go
+++ b/login.go
@@ -92,6 +92,11 @@ func checkLogin(w http.ResponseWriter, r *http.Request) *LoginStatus {
 		DN: login_info.DN,
 	}, config, l)
 
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return nil
+	}
+
 	userEntry := ldapUser.UserEntry
 
 	loginStatus := &LoginStatus{
diff --git a/model-user.go b/model-user.go
index 6d92186..143eae7 100644
--- a/model-user.go
+++ b/model-user.go
@@ -45,6 +45,9 @@ func get(user User, config *ConfigFile, ldapConn *ldap.Conn) (*User, error) {
 	)
 	searchRes, err := ldapConn.Search(searchReq)
 	if err != nil {
+		log.Printf("get User : %v", err)
+		log.Printf("get User : %v", searchReq)
+		log.Printf("get User : %v", searchRes)
 		return nil, err
 	}
 	userEntry := searchRes.Entries[0]