Failed to auto-configure a DataSource: 'spring.datasource.url' is not specified
Since you have added both mongodb and data-jpa dependencies in your pom.xml file, it was creating a dependency conflict like below
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-mongodb</artifactId></dependency>Try removing jpa dependency and run. It should work fine.
Go to resources folder where the application.properties is present, update the below code in that.
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
Add the line below in application.properties file under resource folder and restart your application.
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration