fxml file does not see method

Actually, here is the fxml file

<?xml version="1.0" encoding="UTF-8"?> <?import javafx.scene.text.*?> <?import javafx.geometry.*?> <?import javafx.scene.control.*?> <?import java.lang.*?> <?import javafx.scene.layout.*?> <?import javafx.geometry.Insets?> <?import javafx.scene.layout.GridPane?> <?import javafx.scene.control.Button?> <?import javafx.scene.control.Label?> <VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="420.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller"> <children> <FlowPane prefHeight="60.0" prefWidth="420.0"> <children> <Button mnemonicParsing="false" onAction="#showDialog" prefWidth="100.0" text="Добавить"> <FlowPane.margin> <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" /> </FlowPane.margin> </Button> <Button mnemonicParsing="false" prefWidth="100.0" text="Изменить"> <FlowPane.margin> <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" /> </FlowPane.margin> </Button> <Button mnemonicParsing="false" prefWidth="100.0" text="Удалить"> <FlowPane.margin> <Insets bottom="20.0" left="20.0" top="20.0" /> </FlowPane.margin> </Button> </children> </FlowPane> <AnchorPane prefHeight="60.0"> <children> <TextField layoutX="14.0" layoutY="18.0" promptText="Введите имя" AnchorPane.leftAnchor="20.0" AnchorPane.rightAnchor="140.0" /> <Button layoutX="306.0" layoutY="18.0" mnemonicParsing="false" prefWidth="100.0" text="Поиск" AnchorPane.rightAnchor="20.0" /> </children> <VBox.margin> <Insets /> </VBox.margin> </AnchorPane> <AnchorPane prefHeight="420.0" VBox.vgrow="ALWAYS"> <children> <TableView layoutX="14.0" prefWidth="420.0" AnchorPane.bottomAnchor="20.0" AnchorPane.leftAnchor="20.0" AnchorPane.rightAnchor="20.0" AnchorPane.topAnchor="20.0"> <columns> <TableColumn prefWidth="75.0" text="ФИО" /> <TableColumn prefWidth="75.0" text="Телефон" /> </columns> <columnResizePolicy> <TableView fx:constant="CONSTRAINED_RESIZE_POLICY" /> </columnResizePolicy> </TableView> </children> </AnchorPane> <AnchorPane prefHeight="60.0"> <children> <Label layoutX="14.0" layoutY="21.0" text="Количество контактов:" AnchorPane.bottomAnchor="20.0" AnchorPane.leftAnchor="20.0" /> </children> </AnchorPane> </children> </VBox> 

Does not see showDialog (17th line), although it is implemented

 public void showDialog(ActionEvent actionEvent) { try { Stage modalStage = new Stage(); Parent secRoot = FXMLLoader.load(getClass().getResource("secStage.fxml")); modalStage.setTitle("Добавление контакта"); Scene secScene = new Scene(secRoot, 380, 110); modalStage.setScene(secScene); modalStage.setResizable(false); modalStage.initModality(Modality.WINDOW_MODAL); modalStage.initOwner(((Node)actionEvent.getSource()).getScene().getWindow()); modalStage.show(); } catch(IOException e) {System.out.println(e.getCause());} }