Build failed Spring Boot Plugin was not found - spring

Question

I download a repo 'gs-handling-form-submission' from spring.io and now I'm trying to build: gradle build
Following Error has being triggered
* Where:
Build file 'C:\Users\Username\Desktop\gs-handling-form-submission\complete\build.gradle' line: 11
* What went wrong:
Plugin [id: 'org.springframework.boot', version: '2.4.2'] was not found in any of the following sources:
- Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
- Plugin Repositories (could not resolve plugin artifact 'org.springframework.boot:org.springframework.boot.gradle.plugin:2.4.2')
Searched in the following repositories:
Gradle Central Plugin Repository
I already added a repo url, changed spring.boot version, added buildscript.repositories() at the first line, even doing that, I can't get to compile.
plugins {
id 'org.springframework.boot' version '2.4.2'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
jcenter()
mavenCentral()
maven {
url: "https://plugins.gradle.org/m2/"
}
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-starter-web'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
}
test {
useJUnitPlatform()
}

Answer 1

Fixing the build.gradle, removing : url, was possible to build
plugins {
id 'org.springframework.boot' version '2.6.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
jcenter()
mavenCentral()
maven {
url 'https://plugins.gradle.org/m2/'
}
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
implementation 'org.springframework.boot:spring-boot-starter-web'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
}
test {
useJUnitPlatform()
}