Updated to most recent Unity, and getting Gradle errors when building now

Hi everybody,

I just updated to the most recent Unity, and also just downloaded Unity Hub. Through it, i installed the most recent Unity... 2019.2.3f1. I also installed the android package, including the NDK and SDK stuff. But, now when I try to build my projects... there is an error when it's at the end finalizing things with the Gradle

What seems to be most important out of the big pile of vomit that is spewed at my by the console, this is what seems important:

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BUILD FAILED WITH AN EXCEPTION
...
...
...
stderr[
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'gradleOut'.
> Failed to notify project evaluation listener.
> org.gradle.api.tasks.compile.CompileOptions.setBootClasspath(Ljava/lang/StringV
* 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
BUILD FAILED in 15s

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Would anyone be able to push me in the right direction on how to solve this?
Thank you!

 

I solved this by unchecking the use custom gradle template option. This is in Project Settings > Player > Build > Custom Gradle Template. This is because I had upgraded my unity version and to get it to work I needed a custom gradle file, which had set the gradle plugin version to "classpath 'com.android.tools.build:gradle:3.0.1'", but it needed a higher version. Once I unchecked the use custom gradle template option, the generated "Temp/gradleOut/build.gradle" file set the plugin version to 3.4.0 and it fixed the problem.