Erro ao fazer consulta no banco postgresql no javafx

Estou tendo o seguinte erro no meu metodo pesquisar:

Conectado
Exception in thread “JavaFX Application Thread” java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8413)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:381)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.reflect.misc.Trampoline.invoke(Unknown Source)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)
… 48 more
Caused by: java.lang.NullPointerException
at control.ListaDiscosControl.pesquisarDisco(ListaDiscosControl.java:122)
… 58 more

botao pesquisar:

@FXML
void pesquisarDisco() {
DiscoDAO dao = new DiscoDAO();
try{
List resultado = dao.pesquisarResitro(txtPesquisarDisco.getText());

		if(resultado.isEmpty()){
			Main.caixaDialogoInformacao("Nenhum funcionario encontrado");
			limparCampos();
		}else{
			discos.setItems(FXCollections.observableList(resultado));
		}
	}catch(Exception e){
		Main.caixaDialogoErro("Houve problemas ao realizar pesquisa.\n " + e.getMessage());
		limparCampos();
	}	
}

metodo pesquisar:

public List<Disco> pesquisarResitro(String nomeDisco){
	Conexao con = new Conexao();		
	List<Disco> discos = new ArrayList<>();		
	String sql = "SELECT * FROM \"DISCO\" WHERE \"NM_DISCO\" LIKE '%" +nomeDisco+ "%';";
	
	try {
		PreparedStatement ps = con.getConexao().prepareStatement(sql);			
		ResultSet rs = ps.executeQuery();
		
		while(rs.next()){
			Disco disco = new Disco();
			disco.setIdDisco(rs.getInt("ID_DISCO"));
			disco.setNomeDisco(rs.getString("NM_DISCO"));
			disco.setNomeCantor(rs.getString("NM_CANTOR"));
			disco.setNomeProdutor(rs.getString("NM_PRODUTOR"));
			disco.setNomeSelo(rs.getString("SELO"));
			disco.setNomeSelo(rs.getString("VERTENTE"));
			disco.setAnoProducao(rs.getString("ANO_PRODUCAO"));
			disco.setFormato(rs.getString("FORMATO"));
			disco.setObs(rs.getString("OBS"));
			
			discos.add(disco);
		}
		rs.close();
		ps.close();
		
	} catch (SQLException e) {
		throw new RuntimeException(e.getMessage());
	}
	
	return discos;
}

Alguem consegue me ajudar?
OBS: Capturei o erro tirando a tratativa de erro.

Não precisa duplicar tópicos. Basta responder no original que você consegue resolver o problema.

desculpa por duplicar topicos…mas vc consegue me ajudar?

Responda o que perguntei no primeiro tópico.

discos.setItems(FXCollections.observableList(resultado));

Onde você instanciou a variável discos?

da classe “ListaDiscosControl” discos é uma table view
na classe “DiscoDAO” eu criei ela nessa linha: “List discos = new ArrayList<>();”

@FXML
private TableView discos;