title: Got an error when building spring security from source
body: <p>I need to build spring security from source for my experiments. I ran the command <code>$./gradlew install</code> folloing its guide in github<a href="https://github.com/spring-projects/spring-security" rel="nofollow noreferrer">github: spring-security</a>. However, it returns the following errors:</p>
  <pre><code>FAILURE: Build failed with an exception.
  
  * What went wrong:
  Could not determine the dependencies of task ':spring-security-config:compileKotlin'.
  &gt; Could not resolve all files for configuration ':spring-security-config:kotlinCompilerClasspath'.
     &gt; Could not resolve org.jetbrains.kotlin:kotlin-compiler-embeddable:1.4.10.
       Required by:
           project :spring-security-config
        &gt; Could not resolve org.jetbrains.kotlin:kotlin-compiler-embeddable:1.4.10.
           &gt; Could not get resource 'https://repo.spring.io/libs-snapshot/org/jetbrains/kotlin/kotlin-compiler-embeddable/1.4.10/kotlin-compiler-embeddable-1.4.10.pom'.
              &gt; Could not HEAD 'https://repo.spring.io/libs-snapshot/org/jetbrains/kotlin/kotlin-compiler-embeddable/1.4.10/kotlin-compiler-embeddable-1.4.10.pom'. Received status code 401 from server: Unauthorized
     &gt; Could not resolve org.jetbrains.kotlin:kotlin-bom:1.4.10.
       Required by:
           project :spring-security-config
        &gt; Could not resolve org.jetbrains.kotlin:kotlin-bom:1.4.10.
           &gt; Could not get resource 'https://repo.spring.io/libs-snapshot/org/jetbrains/kotlin/kotlin-bom/1.4.10/kotlin-bom-1.4.10.pom'.
              &gt; Could not GET 'https://repo.spring.io/libs-snapshot/org/jetbrains/kotlin/kotlin-bom/1.4.10/kotlin-bom-1.4.10.pom'. Received status code 401 from server: Unauthorized
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
  
  * Get more help at https://help.gradle.org
  
  Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
  Use '--warning-mode all' to show the individual deprecation warnings.
  See https://docs.gradle.org/6.6.1/userguide/command_line_interface.html#sec:command_line_warnings
  
  BUILD FAILED in 3m 53s
  </code></pre>
  <p>What is the cause? How to fix it?</p>