Broke When Adding Blocks

Question

My code broke once I tried adding blocks around everything.

Here is the error code:

ERROR spark.http.matching.GeneralError - com.github.jknack.handlebars.HandlebarsException: /templates/index.hbs:2:7: java.lang.reflect.InaccessibleObjectException: Unable to make public boolean java.util.Collections$EmptyMap.isEmpty() accessible: module java.base does not "opens java.util" to unnamed module @19277269 /templates/index.hbs:2:7

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make public boolean java.util.Collections$EmptyMap.isEmpty() accessible: module java.base does not "opens java.util" to unnamed module @19277269

index.hbs:

{{#partial "content"}}
    {{#if username}}
        <h1>Welcome {{ username }}!</h1>
    {{ else }}
        <h1>Welcome Students!</h1>
        <form action="/sign-in" method="post">
            <input type="text" placeholder="What's your user name?" name="username">
            <button>Sign In</button>
       </form>
    {{/if}}
{{/partial}}

{{> base.hbs}}

sign-in.hbs

{{#partial "title"}}Signed In!{{/partial}}

{{#partial "content"}}
    <p>Welcome {{ username }}!</p>
{{/partial}}

{{> base.hbs}}

base.hbs

{{#block "header"}}

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>{{#block "title"}}Welcome to Course Ideas{{/block}}</title>
    <link rel="stylesheet" href="/css/main.css">
</head>
<body>
{{/block}}

{{#block "content"}}{{/block}}

{{#block "footer"}}
    </body>
    </html>
{{/block}}

Main.java

package org.example;

import org.example.model.CourseIdeaDAO;
import org.example.model.CourseIdea;
import org.example.model.SimpleCourseIdeaDAO;

import spark.ModelAndView;
import spark.template.handlebars.HandlebarsTemplateEngine;

import java.util.HashMap;
import java.util.Map;

import static spark.Spark.*;

// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
    public static void main(String[] args) {
        staticFileLocation("/public");

        CourseIdeaDAO dao = new SimpleCourseIdeaDAO();

        get("/", (req, res) -> {
            Map<String, String> model = new HashMap<>();
            model.put("username", req.cookie("username"));
            return new ModelAndView(model, "index.hbs");
        }, new HandlebarsTemplateEngine());

        post("/sign-in", (req, res) -> {
            Map<String, String> model = new HashMap<>();
            String username = req.queryParams("username");
            res.cookie("username", username);
            model.put("username", username);
            return new ModelAndView(model, "sign-in.hbs");
        }, new HandlebarsTemplateEngine());


        // Press Alt+Enter with your caret at the highlighted text to see how
        // IntelliJ IDEA suggests fixing it.
        System.out.printf("Hello and welcome!");
    }

}

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Jeremy Dyck

Jeremy Dyck

Broke When Adding Blocks