Could not resolve all files for configuration ':app:debugRuntimeClasspath' error when using a external library(Android Studio Kotlin)

The full error message is

Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all files for configuration ':app:debugRuntimeClasspath'.

This error occurs when I tried implementing the searchablespinner view in the XML file. Is the above dependency corrupted or did I do something wrong?

build.gradle

dependencies {
implementation 'gr.escsoft.michaelprimez.searchablespinner:SearchableSpinner:1.0.9'

implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.5.0'
implementation 'com.google.android.material:material:1.6.1'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.github.chivorns:smartmaterialspinner:1.5.0'

}

activity_main.xml

    <?xml version="1.0" encoding="utf-8"?>
<androidx.appcompat.widget.LinearLayoutCompat xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

<gr.escsoft.michaelprimez.searchablespinner.SearchableSpinner
    android:id="@+id/SearchableSpinner"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />
    
</androidx.appcompat.widget.LinearLayoutCompat>