compileSdkVersion is not specified error

[mcativa]

While building the project in 101 the following error appears...

FAILURE: Build failed with an exception.

• Where:
  Build file '/Users/mcativa/Documents/GitHub/Material Design/material-components-flutter-codelabs/mdc_100_series/android/build.gradle' line: 26

• What went wrong:
  A problem occurred evaluating root project 'android'.

A problem occurred configuring project ':app'.
compileSdkVersion is not specified.

While the problems ir reported in ./android/build.gradle' it should be fixed in ./android/app/build.gradle next to:

targetSdkVersion 28
//Add following
compileSdkVersion 28

[guidezpl]

#240