java.lang.IllegalArgumentException: At least one JPA metamodel must be present - spring-mvc

Question

I Integrate the LightAdmin Plugging in my spring boot project,but Run this project
throw the Exception. Exception is At least one JPA metamodel must be present. I Basically add the springjpa dependency spring-boot-starter-data-jpa in pom.xml, but again same exception throw.
I cannot understand, how to solve these problem Please help ...............!
Pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javabootstar</groupId>
<artifactId>LightAdminExample</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>LightAdminExample</name>
<description>Spring Boot With LightAdmin</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.lightadmin/lightadmin <dependency>
<groupId>org.lightadmin</groupId> <artifactId>lightadmin</artifactId> <version>1.0.1.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.lightadmin</groupId>
<artifactId>lightadmin</artifactId>
<version>1.2.0.RC1</version>
</dependency>
<dependency>
<groupId>org.lightadmin</groupId>
<artifactId>light-logging-configurer</artifactId>
<version>1.0.0.RC1</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.4.Final</version><!--$NO-MVN-MAN-VER$ -->
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.3.Final</version><!--$NO-MVN-MAN-VER$ -->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
AppConfig.java
#EnableJpaRepositories(basePackages= {"com.javabootstar.domain"})
#SpringBootApplication
#ComponentScan(basePackages= {"com.javabootstar.administrationConfig"})
#EntityScan(basePackages= {"com.javabootstar.domain"})
public class LightAdminExampleApplication extends SpringBootServletInitializer {
#Override
public void onStartup(ServletContext servletContext) throws ServletException {
LightAdmin.configure(servletContext)
.basePackage("org.lightadmin.boot.administration")
.baseUrl("/admin")
.security(false)
.backToSiteUrl("http://lightadmin.org");
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(LightAdminExampleApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(LightAdminExampleApplication.class, args);
}
}

Answer 1

I faced similar issue. I solved it by
Creating new configuration class containing #EnableJpaRepositories & #EntityScan
Remove #EnableJpaRepositories & #EntityScan from root application class