Swagger2: Failed to introspect Class [springfox.documentation.swagger2.configuration.Swagger2DocumentationConfiguration]

I’m trying to use swagger2 in my project but getting below error. “java.lang.IllegalStateException: Failed to introspect Class [springfox.documentation.swagger2.configuration.Swagger2DocumentationConfiguration] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@16f65612]” //Spring Boot version: 2.1.9 //Swagger2: 2.9.2 //java: 11 package path.to.package; import static springfox.documentation.builders.PathSelectors.regex; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 public class SwaggerConfig { @Bean public Docket…

React$Node is undefined

I created new RN project. And this warning showed. I use Flow and eslint for this project. And I know what React$Node means. But I don’t know why this warning shows. Because I think React already defined it. This is my .eslintrc.js. module.exports = { parser: ‘babel-eslint’, extends: [‘airbnb’, ‘prettier’, ‘prettier/react’, ‘prettier/flowtype’], plugins: [‘react’, ‘flowtype’,…

IntelliJ Could not set unknown property ‘mainClassName’ for root project ‘Blue Bot’ of type org.gradle.api.Project

I am following a tutorial to make a basic Discord Bot, (https://medium.com/discord-bots/making-a-basic-discord-bot-with-java-834949008c2b) and i got the error, Could not set unknown property ‘mainClassName’ for root project ‘Blue Bot’ of type org.gradle.api.Project and I don’t know how to fix it. Here is my build.grade code plugins { id ‘java’ } mainClassName = “Main” group ‘BlueBot’ version…