Fix build failure

Author: VishalNehra

lib/build.gradle

@@ -19,6 +19,18 @@ android {
 		minSdkVersion 21
 		targetSdkVersion 31
 	}
+
+
+	buildTypes {
+		release {
+			minifyEnabled false
+			proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+		}
+	}
+	compileOptions {
+		sourceCompatibility JavaVersion.VERSION_1_8
+		targetCompatibility JavaVersion.VERSION_1_8
+	}
 }
 
 afterEvaluate {