启动Sentinel失败，无法加载配置类，该怎么解决啊？

Question

1 今天学习Sentinel，课件给jar包版本是1.8.1，然后我下载下来运行启动不成

java -jar sentinel-dashboard-1.8.2.jar

2 然后提示

2021-12-01 21:48:56.734 ERROR 7792 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalStateException: Cannot load configuration class: com.alibaba.csp.sentinel.dashboard.DashboardApplication
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:414) ~[spring-context-5.0.9.RELEASE.jar!/:5.0.9.RELEASE]

3 然后我又去GitHub上下载了最新的1.8.2还是这个错误

4 我该怎么才能正常启动呀？