Try to add topic pages

build.gradle

@@ -7,7 +7,7 @@ plugins {
 
 group = 'site.easy-startup'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '8'
+sourceCompatibility = "16"
 
 configurations {
 	compileOnly {
@@ -42,3 +42,4 @@ dependencies {
 tasks.named('test') {
 	useJUnitPlatform()
 }
+targetCompatibility = JavaVersion.VERSION_16