[FIXED] java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment

Issue

I am somewhat new to coding and am trying to use the Lombok plugin to automatically create Getters/Setters e.t.c. for my fields of a specific class. In doing so I get greeted with the following error:

The error:

java: java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor (in unnamed module @0x3b67ef9b) cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.processing to unnamed module @0x3b67ef9b

After doing some searching online, I found out that this error is related to an issue in OpenJDK 15 but I am currently using OpenJDK 16, hence why I am confused that I am still getting this error.

This thread claims to have a solution: https://github.com/rzwitserloot/lombok/issues/2681#issuecomment-748616687 but after implementing the plugin, it does not seem to make any difference and I still receive the error.

I have most likely made a trivial mistake since I am a beginner but if someone knows what I am missing please let me know.

Class Using @Data (Lombok):

import lombok.Data;

@Data
public class Ingredient {

    private final String id;
    private final String name;
    private final Type type;

    public enum Type {
        WRAP, PROTEIN, VEGGIES, CHEESE, SAUCE
    }

}

My Pom File:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>sia</groupId>
    <artifactId>taco-cloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>taco-cloud</name>
    <description>Taco Cloud Project</description>
    <properties>
        <java.version>16</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Solution

Switch to at least the 1.18.20 version of Lombok that contains the fix

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.20</version>
</dependency>

Answered By - FrankyFred