springboot thymeleaf模板解析错误

## 求解！！！springboot中thymeleaf模板解析错误

• org.thymeleaf.TemplateEngine : [THYMELEAF][http-nio-8081-exec-1] Exception processing template "upload": An error happened during template parsing (template: "class path resource [static/upload.html]") org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [static/upload.html]")
• 1.application.properties配置和pom.xml配置.
• 2.controller
• 3.前端页面
• 不知道哪有问题，整的都崩溃了，拜托各位路过的大神给个解法吧

org.thymeleaf.TemplateEngine : [THYMELEAF][http-nio-8081-exec-1] Exception processing template “upload”: An error happened during template parsing (template: “class path resource [static/upload.html]”) org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: “class path resource [static/upload.html]”)

1.application.properties配置和pom.xml配置.

2.controller

3.前端页面

不知道哪有问题，整的都崩溃了，拜托各位路过的大神给个解法吧