Build Fail

[catinred2]

I try 'mvn clean package -DskipTests' after cloning repo.

Build Log:

[ERROR] /Users/ming/Documents/git/xwintop-xJavaFxTool-spring/src/main/java/com/xwintop/xJavaFxTool/controller/codeTools/ColorCodeConverterToolController.java:[8,37] cannot find symbol
  symbol:   class ClipboardUtil
  location: package com.xwintop.xcore.util.javafx

BTW, there are some warnings,

[WARNING] Could not validate integrity of download from https://gitee.com/xwintop/maven/raw/master/repository/com/xwintop/xcore/0.0.1-SNAPSHOT/xcore-0.0.1-20180209.024420-1.pom: Checksum validation failed, expected e08ad8b7e29b3a9edd51c2aad3797ebca6119616 but is 98af25c786602cffacee27c457070829a9a16fb2
[WARNING] Checksum validation failed, expected 4adcc2304cc4de2287f2635ca04e20c9501c1445 but is ac72205f4eb2f8c0c14280041fc3c973bf45248d from xwintop-maven for https://gitee.com/xwintop/maven/raw/master/repository/com/xwintop/xcoreSpring/0.0.1-SNAPSHOT/xcoreSpring-0.0.1-20180103.152121-1.pom
[WARNING] Could not validate integrity of download from https://gitee.com/xwintop/maven/raw/master/repository/com/xwintop/xcoreSpring/0.0.1-SNAPSHOT/xcoreSpring-0.0.1-20180103.152121-1.pom: Checksum validation failed, expected 4adcc2304cc4de2287f2635ca04e20c9501c1445 but is ac72205f4eb2f8c0c14280041fc3c973bf45248d
[WARNING] Checksum validation failed, expected 4adcc2304cc4de2287f2635ca04e20c9501c1445 but is ac72205f4eb2f8c0c14280041fc3c973bf45248d from xwintop-maven for https://gitee.com/xwintop/maven/raw/master/repository/com/xwintop/xcoreSpring/0.0.1-SNAPSHOT/xcoreSpring-0.0.1-20180103.152121-1.pom

Env:
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T15:58:13+08:00)
Maven home: /usr/local/Cellar/maven/3.5.2/libexec
Java version: 1.8.0_91, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.12.6", arch: "x86_64", family: "mac"