TypeError: /root/sites/xyy.tw/views/mower.pug:32
   30| p
   31| strong= i18n.__('LANGUAGEVARIETY')
 > 32| - varieties = varieties.reverse()
   33| - json.variety = json.variety.reverse()
   34| //- span= json.variety
   35| each variety, key in json.variety

Cannot read property 'reverse' of undefined
   at eval (eval at wrap (/root/sites/xyy.tw/node_modules/pug-runtime/wrap.js:6:10), <anonymous>:322:23)
   at template (eval at wrap (/root/sites/xyy.tw/node_modules/pug-runtime/wrap.js:6:10), <anonymous>:1025:7)
   at Object.exports.renderFile (/root/sites/xyy.tw/node_modules/pug/lib/index.js:452:38)
   at Object.exports.renderFile (/root/sites/xyy.tw/node_modules/pug/lib/index.js:442:21)
   at View.exports.__express [as engine] (/root/sites/xyy.tw/node_modules/pug/lib/index.js:491:11)
   at View.render (/root/sites/xyy.tw/node_modules/express/lib/view.js:135:8)
   at tryRender (/root/sites/xyy.tw/node_modules/express/lib/application.js:640:10)
   at Function.render (/root/sites/xyy.tw/node_modules/express/lib/application.js:592:3)
   at ServerResponse.render (/root/sites/xyy.tw/node_modules/express/lib/response.js:1012:7)
   at Statement.<anonymous> (/root/sites/xyy.tw/index.js:770:11)
   at Statement.replacement (/root/sites/xyy.tw/node_modules/sqlite3/lib/trace.js:25:27)