Gradle 6.5.1 gretty 3.0.3 unable to run jetty - gradle

Question

I am trying to build my first REST API, using jersey on Eclipse. This is my build.gradle:
plugins {
//id "com.dsvdsv.gradle.plugin" version "1.5.1"
//id 'org.gretty' version '2.1.0'
id "org.gretty" version "3.0.3"
//id 'com.bmuschko.tomcat'
id 'eclipse-wtp'
id 'war'
//id 'jetty'
id 'org.springframework.boot' version '2.4.2'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
id 'application'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'
mainClassName = 'com.example.demo.DemoApplication'
repositories {
mavenCentral()
//jcenter()
}
dependencies {
// https://mvnrepository.com/artifact/org.gretty/gretty-runner-tomcat85
//compile group: 'org.gretty', name: 'gretty-runner-tomcat85', version: '2.2.0'
implementation 'org.glassfish.jersey.containers:jersey-container-servlet:2.25.1'
implementation 'org.glassfish.jersey.inject:jersey-hk2:2.26'
implementation 'org.springframework.boot:spring-boot-starter'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
//implementation 'com.bmuschko:gradle-tomcat-plugin:2.5'
}
test {
useJUnitPlatform()
}
When I use gradle jettyStart or gradle jettyRunWar, getting below error:
FAILURE: Build failed with an exception.
What went wrong:
Execution failed for task ':jettyStart'.
Could not resolve all files for configuration ':grettyRunnerJetty94'.
Could not find org.gretty:gretty-runner-jetty94:3.0.3.
Required by:
project :
I also tried gretty 2.1.0 version, but it's unreachable. Gradle version is 6.5.1

Answer 1

As mentioned by #Knut Forkalsrud newer gretty versions are not in maven central and you need to add jcenter() to the list of repositories:
repositories {
jcenter()
mavenCentral()
// other repositories
}
Additional Note: The order of repositories is also important (similar to maven). So make sure you add the jcenter() at the right place in your list of repositories.