lombok.javac.apt.LombokProcessor could not be initialized

Output of gradlew -v shows that you are using JDK 9 which is not supported by JHipster 4.10.2, please use JDK 8. Same for Lombok.

------------------------------------------------------------ Gradle 4.2.1 -------
Build time: 2017-10-02 15:36:21 UTC 
Revision: a88ebd6be7840c2e59ae4782eb0f27fbe3405ddf 
Groovy: 2.4.12 
Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015 
JVM: 9.0.1 (Oracle Corporation 9.0.1+11) 
OS: Mac OS X 10.13.1 x86_64

if you are using gradle this has worked for me

dependencies {    annotationProcessor group: 'org.projectlombok', name: 'lombok', version: '1.18.16'}

I was facing the similar warning in my project as we moved from JDK 8 to JDK 9.

Upgrading the lombok version helped me with removing the error.

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.20</version>
            <scope>provided</scope>
        </dependency>

I found the reference over here https://github.com/rzwitserloot/lombok/issues/1541