There was an unexpected error (type=Internal Server Error, status=500). Could not parse as each: “us

There was an unexpected error (type=Internal Server Error, status=500).
Could not parse as each: “user：${users}” (template: “successqw” - line 15, col 24)

spring boot +Thymeleaf each时

<!--th:each每次遍历都会生成当前这个标签:3个h4-->
<h4 th:text="${user}"  th:each="user：${users}"></h4>

因为user后的：号是中文，所以错误