質問編集履歴
1
エラーコード追記
title
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File without changes
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body
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@@ -14,6 +14,16 @@
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14
14
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```
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15
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Cannot read property 'toLowerCase' of undefined
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16
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TypeError: Cannot read property 'toLowerCase' of undefined
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17
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at ReactDOMServerRenderer.renderDOM (/usr/src/app/node_modules/react-dom/cjs/react-dom-server.node.development.js:2776:28)
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18
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at ReactDOMServerRenderer.render (/usr/src/app/node_modules/react-dom/cjs/react-dom-server.node.development.js:2755:23)
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19
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at ReactDOMServerRenderer.read (/usr/src/app/node_modules/react-dom/cjs/react-dom-server.node.development.js:2722:19)
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20
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at renderToString (/usr/src/app/node_modules/react-dom/cjs/react-dom-server.node.development.js:2980:25)
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21
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at renderPage (/usr/src/app/node_modules/next/dist/server/render.js:174:26)
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22
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at Function.getInitialProps (/usr/src/app/node_modules/next/dist/server/document.js:83:25)
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23
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at Function._callee$ (/usr/src/app/pages/_document.js:6:25)
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24
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at tryCatch (/usr/src/app/node_modules/babel-runtime/node_modules/regenerator-runtime/runtime.js:65:40)
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25
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at Generator.invoke [as _invoke] (/usr/src/app/node_modules/babel-runtime/node_modules/regenerator-runtime/runtime.js:299:22)
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26
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at Generator.prototype.(anonymous function) [as next] (/usr/src/app/node_modules/babel-runtime/node_modules/regenerator-runtime/runtime.js:117:21)
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```
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18
28
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refを使う方法も試してみたのですが、いまいち理解できずこちらもエラーが起きてしまいました。
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19
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