title: Unable to find method 'org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension.macosX64()
body: <p>I've updated kotlin from <strong>1.3.61</strong> to <strong>1.3.70</strong> in my multiplatform project with android, jvm, ios and macosx64 targets not changing other code and whenever a gradle sync is attempted I get the following message (and the project build fails, of course):</p>
  
  <pre><code>CONFIGURE FAILED in 3s
  Unable to find method 'org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension.macosX64()Lorg/jetbrains/kotlin/gradle/plugin/mpp/KotlinNativeTargetWithHostTests;'.
  Possible causes for this unexpected error include:
  Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
  Re-download dependencies and sync project (requires network)
  
  The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
  Stop Gradle build processes (requires restart)
  
  Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.
  </code></pre>
  
  <p>I've tried the solutions described above, I also tried to clear <code>.gradle/caches</code>, but nothing changed. What might be the problem?</p>