Error starting ApplicationContext. To display the auto-configuration report re-run your application with ‘debug’ enabled

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2019-09-08 02:07:28.798 ERROR 10540 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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APPLICATION FAILED TO START
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Description:

Cannot determine embedded database driver class for database type NONE

Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).


Process finished with exit code 1

When the springboot project is started, no error is reported, but it will be terminated automatically later. View POM file

       <!-- spring boot Integration mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.0</version>
        </dependency>

        <!-- MySQL -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

The solution: in the pom.xml Remove database related dependencies (MySQL connection)- java.jar,  mybatis.xxx.jar, PageHelper, database connection pool, etc.)

There must be a default configuration file, if any. Such as database connection configuration.