编译H5版本，无法运行，一直报错 ：TypeError: Cannot read property 'map' of undefined

[slxgsy]

微信小程序 转成taro项目，再转H5版本。浏览器能正常浏览页面，但是一直报JS错误：
TypeError: Cannot read property 'map' of undefined
at ItemMatchTmpl.render (competition_competition.js:1)
at app.js:1
at errorCatcher (app.js:1)
at renderComponent (app.js:1)
at mountComponent (app.js:1)
at ComponentWrapper.init (app.js:1)
at createElement (app.js:1)
at mountChild (app.js:1)
at mountVNode$1 (app.js:1)
at createElement (app.js:1)

Taro CLI 1.3.11 environment info:
System:
OS: macOS High Sierra 10.13.6
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 12.7.0 - ~/.nvm/versions/node/v12.7.0/bin/node
npm: 6.10.0 - ~/.nvm/versions/node/v12.7.0/bin/npm
npmPackages:
@tarojs/components: 1.3.11 => 1.3.11
@tarojs/plugin-babel: 1.3.11 => 1.3.11
@tarojs/plugin-csso: 1.3.11 => 1.3.11
@tarojs/plugin-sass: 1.3.11 => 1.3.11
@tarojs/plugin-uglifyjs: 1.3.11 => 1.3.11
@tarojs/router: 1.3.11 => 1.3.11
@tarojs/taro: 1.3.11 => 1.3.11
@tarojs/taro-alipay: 1.3.11 => 1.3.11
@tarojs/taro-h5: 1.3.11 => 1.3.11
@tarojs/taro-qq: 1.3.11 => 1.3.11
@tarojs/taro-quickapp: 1.3.11 => 1.3.11
@tarojs/taro-swan: 1.3.11 => 1.3.11
@tarojs/taro-tt: 1.3.11 => 1.3.11
@tarojs/taro-weapp: 1.3.11 => 1.3.11
@tarojs/webpack-runner: 1.3.11 => 1.3.11
eslint-config-taro: 1.3.11 => 1.3.11
eslint-plugin-taro: 1.3.11 => 1.3.11
nerv-devtools: ^1.4.0 => 1.4.3
nervjs: ^1.4.0 => 1.4.3
stylelint-config-taro-rn: 1.3.11 => 1.3.11
stylelint-taro-rn: 1.3.11 => 1.3.11

[taro-bot]

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Good luck and happy coding~

[luckyadam]

点进报错的代码调试一下，实在找不出问题把报错的代码截图贴出来