Build error

[thorapps]

Hi,
I'm not able to run the app, I got the following error:
info Installing the app...

Welcome to Gradle 6.1.1!

Here are the highlights of this release:

• Reusable dependency cache
• Configurable compilation order between Groovy/Kotlin/Java/Scala
• New sample projects in Gradle's documentation

For more details see https://docs.gradle.org/6.1.1/release-notes.html

Starting a Gradle Daemon (subsequent builds will be faster)

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.

• Where:
  Build file 'C:\MyData\Thor Apps\Aplicacions\React\nyxo\android\app\build.gradle' line: 8

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

C:\MyData\Thor Apps\Aplicacions\React\nyxo\android\keystores\release.keystore.properties (El sistema no puede encontrar la ruta especificada)

• 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.
  ==============================================================================

2: Task failed with an exception.

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

compileSdkVersion is not specified. Please add it to build.gradle

• 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 28s

Thanks for your job