cant resolve symbols settings.gradle - Android Studio

I started by creating a project and I'm trying to use liquid-swipe , I put the appropriate code according to the guide (in the settings.gradle file).

I get an error that I can't solve and I haven't seen a suitable solution (I saw in Flutter that this is a common problem but the solution doesn't work for me)

When I try to sync the gradle file I get errors that result from the fact that Properties and FileInputStream are not recognized:
Cannot resolve symbolFileInputStream
Cannot resolve Properties
(lines 13 14)

how can I fix this?

pluginManagement {
    repositories {
        gradlePluginPortal()
        google()
        mavenCentral()
    }
}
dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
        def githubProperties =  new Properties()
        githubProperties.load(new FileInputStream(rootProject.file("github.properties")))
        repositories {
            maven {
                name = "GitHubPackages"

                url = uri("https://maven.pkg.github.com/Cuberto/liquid-swipe-android")
                credentials {
                    username = githubProperties['gpr.usr'] ?: System.getenv("GPR_USER")
                    password = githubProperties['gpr.key'] ?: System.getenv("GPR_API_KEY")
                }
            }
        }
    }
}
rootProject.name = "My Application"
include ':app'