otro cambio, no se que hize, help

src/main/java/xyz/danielcortes/login/LoginController.java

@@ -37,8 +37,15 @@ public class LoginController {
     String name = this.view.getUserField().getText();
 
     Optional<Usuario> optionalUser = this.repository.getByName(name);
-    if (optionalUser.isEmpty())
+    if (optionalUser.isEmpty()) {
+      JOptionPane.showMessageDialog(
+          null,
+          "El usuario o contraseña son incorrectos",
+          "Error",
+          JOptionPane.ERROR_MESSAGE
+      );
       return;
+    }
 
     Usuario user = optionalUser.get();
     byte[] pass = Hash.sha256(new String(this.view.getPassField().getPassword()).getBytes(StandardCharsets.UTF_8));

src/main/resources/META-INF/persistence.xml

@@ -9,7 +9,7 @@
 
     <properties>
       <property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>
-      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/biblioteca_manual"/>
+      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/biblioteca"/>
       <property name="javax.persistence.jdbc.user" value="root"/>
       <property name="javax.persistence.jdbc.password" value="ff9800s_a_d"/>
       <property name="hibernate.dialect" value="org.hibernate.dialect.MariaDB103Dialect"/>