SyncFailed Error:Cause: org/jetbrains/plugins/gradle/tooling/ModelBuilderService

So the problem was solved by deleting the .gradle folder. Unfortunately none of the answers that I referred to described which .gradle folder I was supposed to delete.

What I did was deleting the .gradle folder inside the project structure. Instead, you have to delete the .gradle folder located in

Windows:

C:/Users/<username>/.gradle.

MacOS:

~/Users/<username>/.gradle

To view hidden files on Mac press command+shift+.

Here is a very simple solution,open your gradle-wrapper.properties file in your project and change your distributionUrl by downgrading/upgrading it.

For example, if gradle 5.1 is giving you problems, you can downgrade to 4.9

distributionUrl=https://services.gradle.org/distributions/gradle-4.9-all.zip