diff --git a/src/errorhandle/GUIErrorBase.cpp b/src/errorhandle/GUIErrorBase.cpp
new file mode 100644
index 0000000..37ffaf0
--- /dev/null
+++ b/src/errorhandle/GUIErrorBase.cpp
@@ -0,0 +1,5 @@
+//
+// Created by Krad on 2021/12/16.
+//
+
+#include "GUIErrorBase.h"
diff --git a/src/errorhandle/GUIErrorBase.h b/src/errorhandle/GUIErrorBase.h
new file mode 100644
index 0000000..0175971
--- /dev/null
+++ b/src/errorhandle/GUIErrorBase.h
@@ -0,0 +1,40 @@
+//
+// Created by Krad on 2021/12/16.
+//
+
+#ifndef GUI_GUIERRORBASE_H
+#define GUI_GUIERRORBASE_H
+
+#include <QWidget>
+
+/**
+ *  GUI Error interface
+ */
+class GUIErrorBase {
+public:
+    GUIErrorBase()= default;
+
+    /**
+     * parse error object from error msg
+     * @param errorMsg
+     */
+    virtual void parse(const QString& errorMsg){};
+
+    /**
+     * setErrorHandleParent
+     * @param parent The parent widget of error handling
+     */
+    void setErrorHandleParent(QWidget* parent){
+        this->parent = parent;
+    };
+
+    /**
+     * handle error, should be implement in sub class
+     */
+    virtual void handle(){};
+protected:
+    QWidget* parent = nullptr;
+};
+
+
+#endif //GUI_GUIERRORBASE_H
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 7c9af96..0f976a4 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1,4 +1,4 @@
-#include "mainwindow.h"
+#include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include <qtabwidget.h>
 #include <QSizePolicy>
@@ -236,6 +236,9 @@ MainWindow::MainWindow(QWidget* parent) :
         msgDialog = nullptr;
         AppGlobalValues::setInProcessing(false);
     });
+    connect(EventCenter::Default(), &EventCenter::RequestLogin, [=](QObject*, QObject* msg) {
+        this->requestLogin();
+    });
     DeviceManager::Default()->initDevice();
 	centerWidgetHide();
 }