Update build.gradle

build.gradle

@@ -131,13 +131,13 @@ task checkAliases {
 
 	doLast {
 		def aliasFolder = new File('skript-aliases')
-		if (!aliasFolder.exists()) {
-			throw new Exception("Aliases do not exist. Maybe update submodules using `git submodule update --init`?")
+		if (!aliasFolder.exists() || aliasFolder.listFiles().length == 0) {
+			throw new InvalidUserDataException("Aliases are missing from 'skript-aliases' folder. Consider fetching submodules with 'git submodule update --init'.")
 		}
 	}
 }
 
-build.dependsOn(checkAliases)
+jar.dependsOn checkAliases
 
 task sourceJar(type: Jar) {
 	from sourceSets.main.allJava
@@ -165,7 +165,6 @@ publishing {
 	}
 }
 
-
 // Set compile encoding to UTF-8 (#850)
 compileJava.options.encoding = 'UTF-8'
 compileTestJava.options.encoding = 'UTF-8'