FAILURE: Build failed with an exception.

[arif567]

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring project ':app'.

failed to find target with hash string 'android-26' in: D:\Program Files\Andro
id\Sdk

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug
  option to get more log output.

BUILD FAILED

[kiwenoob]

any update?