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)：
string does not end with
対処
関連リンク
Regex to match string not ending with pattern - Stack Overflowstackoverflow.com/.../regex-to-match-string-not-ending...
https://stackoverflow.com/questions/11431295/regex-to-match-string-not-ending-with-pattern
String increment: increment the last string by one
https://stackoverflow.com/questions/29601303/string-increment-increment-the-last-string-by-one
Why does string.split with a regular expression that ...
https://stackoverflow.com/questions/38261359/why-does-string-split-with-a-regular-expression-that-co・・・