Can't Run Spring boot application once downgraded jdk version from 11 to 8 using IntelliJIdea

Question

I can't run my java project once downgrade the JDK version from 11 to 8. Spring Boot maven Project and using IntelliJIdea. I've changed project settings on IntelliJIdea. error-screenshot

and project setting screenshot setting-screenshot

Answer 1

You need to delete .idea directoray form your root path of project. also need to remove .iml file if there is. This problems causing in IJ tool.