このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
push function not working
対処
関連リンク
array push function not working on google chrome - Stack Overflowstackoverflow.com/.../array-push-function-not-working...
https://stackoverflow.com/questions/32242177/array-push-function-not-working-on-google-chrome
ReactJS Array.push function not working in setState - Stack ...stackoverflow.com/...push-function-not-working.../521...
https://stackoverflow.com/questions/41052598/reactjs-array-push-function-not-working-in-setstate/521・・・
Array push function not working on js Solutions | Experts ...www.experts-exchange.com/.../Array-push-function-no...
https://www.experts-exchange.com/questions/29002942/Array-push-function-not-working-on-js.html