Solo tomcat 启动报错 Read skin [Pinghsu]'s configuration failed: null

看内容是皮肤插件为 null, 导致 tomcat 也无法启动, 请问如何解决
是按照开发手册下载过皮肤过模块的, 但是还是这问题
git clone --recurse-submodules https://github.com/b3log/solo.git

[root@db11 test]# git clone --recurse-submodules https://github.com/b3log/solo.git

正克隆到 'solo'...
remote: Enumerating objects: 28, done.
remote: Counting objects: 100% (28/28), done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 43921 (delta 9), reused 23 (delta 9), pack-reused 43893
接收对象中: 100% (43921/43921), 92.06 MiB | 14.87 MiB/s, done.
处理 delta 中: 100% (24309/24309), done.
子模组 'src/main/webapp/skins' (https://github.com/b3log/solo-skins) 已为路径 'src/main/webapp/skins' 注册
正克隆到 'src/main/webapp/skins'...
remote: Enumerating objects: 1110, done.
remote: Counting objects: 100% (1110/1110), done.
remote: Compressing objects: 100% (684/684), done.
remote: Total 11660 (delta 785), reused 709 (delta 425), pack-reused 10550
接收对象中: 100% (11660/11660), 23.56 MiB | 5.19 MiB/s, done.
处理 delta 中: 100% (8743/8743), done.

皮肤模块是存在的

[root@db11 solo2]# ls src/main/webapp/skins/

9IPHP   Bruce   Community  Finding  Jane    metro-hot  next     owmx-3.0  README.md  tree-house
Andrea  Casper  favourite  i-nove   Medium  NeoEase    nijigen  Pinghsu   timeline   yilia
[root@db11 solo2]# 

29-May-2019 13:13:42.352 信息 [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
[WARN ]-[2019-05-29 13:13:42]-[org.b3log.latke.Latkes:609]: !!!!Runtime mode is [DEVELOPMENT], please make sure configured it with [PRODUCTION] in latke.properties if deployed on production environment!!!!
[INFO ]-[2019-05-29 13:13:43]-[org.b3log.solo.util.Markdowns:129]: [markdown-http] is not available, uses built-in [flexmark] for markdown processing. Please read FAQ section in user guide (https://hacpai.com/article/1492881378588) for more details.
[INFO ]-[2019-05-29 13:13:43]-[org.b3log.solo.SoloServletListener:99]: Solo is booting [ver=3.6.1, servletContainer=Apache Tomcat/8.5.31, os=Linux, isDocker=false, markdownHttpAvailable=false, pid=87665, runtimeDatabase=MYSQL, runtimeMode=DEVELOPMENT, jdbc.username=root, jdbc.URL=jdbc:mysql://localhost:3306/solo?useUnicode=yes&characterEncoding=UTF-8&useSSL=false&serverTimezone=UTC]
[ERROR]-[2019-05-29 13:13:43]-[org.b3log.latke.Latkes:829]: Read skin [Pinghsu]'s  configuration failed: null
[ERROR]-[2019-05-29 13:13:43]-[org.b3log.solo.SoloServletListener:315]: Can't load the default skins, please make sure skin [Pinghsu] is under skins directory and structure correctly