JAVA

PathProviderPlugin.java uses unchecked or unsafe operations.

Enable multidex for flutter project.

1. Open [project_folder]/app/build.gradle and add following lines.

defaultConfig {
    ...
    multiDexEnabled true
}

and

dependencies {
    ...
    implementation 'com.android.support:multidex:1.0.3'
}

2. Enable Jetifier. Open [project_folder]/android/app/gradle.properties and add
following lines.

android.useAndroidX=true
android.enableJetifier=true

Note: PathProviderPlugin.java uses unchecked or unsafe operations

They will not cause problems for your project as they are just deprecation warnings from the plugin itself.