EDIT::added imports to dashboard.fxml

src/Client/src/main/resources/fxml/dashboard.fxml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import java.lang.*?>
+<?import javafx.scene.chart.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.image.*?>
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.shape.*?>
+<?import javafx.scene.text.*?>
 <?import javafx.scene.chart.PieChart?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.CheckBox?>