It didn't work

Help me, I was using this repo for my project and And when I opened my project it told me the following.

A problem occurred configuring root project 'TamilAudioProV4'.
> Could not resolve all artifacts for configuration ':classpath'.
> Could not find com.github.GrenderG:Toasty:1.5.2.
Searched in the following locations:
- https://dl.google.com/dl/android/maven2/com/github/GrenderG/Toasty/1.5.2/Toasty-1.5.2.pom
- https://repo.maven.apache.org/maven2/com/github/GrenderG/Toasty/1.5.2/Toasty-1.5.2.pom
- https://plugins.gradle.org/m2/com/github/GrenderG/Toasty/1.5.2/Toasty-1.5.2.pom
Required by:
project :

Possible solution:
- Declare repository providing the artifact, see the documentation at `https://docs.gradle.org/current/userguide/declaring_repositories.html```