Spark Java 500 Internal Server error, Exceptions are not stack traced in console

Question

My Pom.Xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.mongodb.week1</groupId>
    <artifactId>m101j-week1</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>3.4.1</version>
        </dependency>
        <!-- SPARK DEPENDENCIES -->
        <dependency>
            <groupId>com.sparkjava</groupId>
            <artifactId>spark-core</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>com.sparkjava</groupId>
            <artifactId>spark-template-freemarker</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.25-incubating</version>
        </dependency>
        <!-- LOGGING DEPENDENCIES -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.13</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.13</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>


    <build> 

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <optimize>true</optimize>
                    <debug>true</debug>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.14</version>
                <configuration>
                    <forkCount>1</forkCount>
                    <reuseForks>false</reuseForks>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>2.8</version>
                <configuration>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

And my template file hello.ftl is as below

<html>
<head>
    <title>welcome</title>
</head>
<body>
    <h1>Hello ${hello}</h1>
</body>

And my SparkRoutes.java looks as below,

package com.mongodb.week1.lesson13;

import spark.ModelAndView;
import spark.Request;
import spark.Response;
import spark.template.freemarker.FreeMarkerEngine;

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

import static spark.Spark.get;

 public class SparkRoutes {

    public static void main(String[] args) {
        get("/", (Request req, Response res) -> {
            Map<String, String> attributes = new HashMap<>();
            attributes.put("hello", "Hello World spark freemarker !");
            return new ModelAndView(attributes, "hello.ftl");
        }, new FreeMarkerEngine());
    }


}

IDE used : Intellij Community 2016.3.3 JDK used : Java 8

500 internal server error is shown in browser when following uri is called http://localhost:4567/

Intellij console Stack Traces are empty except the following messages,

/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/bin/java -Didea.launcher.port=7533 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/tools.jar:/Users/muthuselvam/Documents/balajichander/MONGODB/WEEK 1/intellij workspace/target/classes:/Users/muthuselvam/.m2/repository/org/mongodb/mongo-java-driver/3.4.1/mongo-java-driver-3.4.1.jar:/Users/muthuselvam/.m2/repository/com/sparkjava/spark-core/2.2/spark-core-2.2.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-server/9.0.2.v20130417/jetty-server-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/orbit/javax.servlet/3.0.0.v201112011016/javax.servlet-3.0.0.v201112011016.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-http/9.0.2.v20130417/jetty-http-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-util/9.0.2.v20130417/jetty-util-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-io/9.0.2.v20130417/jetty-io-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-webapp/9.0.2.v20130417/jetty-webapp-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-xml/9.0.2.v20130417/jetty-xml-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-servlet/9.0.2.v20130417/jetty-servlet-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/org/eclipse/jetty/jetty-security/9.0.2.v20130417/jetty-security-9.0.2.v20130417.jar:/Users/muthuselvam/.m2/repository/com/sparkjava/spark-template-freemarker/2.3/spark-template-freemarker-2.3.jar:/Users/muthuselvam/.m2/repository/org/freemarker/freemarker/2.3.25-incubating/freemarker-2.3.25-incubating.jar:/Users/muthuselvam/.m2/repository/org/slf4j/slf4j-api/1.7.13/slf4j-api-1.7.13.jar:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain com.mongodb.week1.lesson13.SparkRoutes
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

Process finished with exit code 100

How to enable stack traces in spark java
How to run spark project with free marker templates properly

thanks.

Welcome to Stack Overflow. It appears that there may be other questions on the site that already address this issue. For this error message `SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".`. Please check these other questions out first. If you still can't find the answer, please point out what is different between your question and the ones I linked: http://stackoverflow.com/questions/13473953/eclipse-failed-to-load-class-org-slf4j-impl-staticloggerbinder http://stackoverflow.com/questions/11916706/slf4j-failed-to-load-class-org-slf4j-impl-staticloggerbinder-error — akousmata, Jan 26 '17 at 14:40

Spark Java 500 Internal Server error, Exceptions are not stack traced in console

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