Just add this plugin ManifestClasspath in your build.gradle file and specify the manifest classpath.
ManifestClasspath plugin creates a manifest jar for jar files in the classpath of JavaExec task and sets the classpath with the manifest jar.
plugins {
id 'org.springframework.boot' version '2.1.4.RELEASE'
id 'java'
id "com.github.ManifestClasspath" version "0.1.0-RELEASE"
}
apply plugin: 'io.spring.dependency-management'
apply plugin: 'application'
mainClassName="com.example.demo.Application"
dependencies {
}