Springboot maven project issue (moving src/main/java and pom.xml to "backend" folder

I have created a spring boot(maven project) in IntelliJ with some dependencies such as Spring Web, Spring JPA Data, Postgresl Driver and etc.

By the start, i have edited application.settings to connect to my database which is postgresl and it works fine. But I wanted to create a folder called “backend” and moved src/main/java and pom.xml into it. This is where come to the error:

2023-10-10T19:14:43.813+08:00  INFO 24280 --- [  restartedMain] c.e.s.SimpleLogin2Application            : Starting SimpleLogin2Application using Java 17.0.1 with PID 24280 (C:\Users\mike\IdeaProjects\simpleLogin2\backend\target\classes started by mike in C:\Users\mike\IdeaProjects\simpleLogin2)
2023-10-10T19:14:43.817+08:00  INFO 24280 --- [  restartedMain] c.e.s.SimpleLogin2Application            : No active profile set, falling back to 1 default profile: "default"
2023-10-10T19:14:43.877+08:00  INFO 24280 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2023-10-10T19:14:43.877+08:00  INFO 24280 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2023-10-10T19:14:44.586+08:00  INFO 24280 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2023-10-10T19:14:44.602+08:00  INFO 24280 --- [  restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 10 ms. Found 0 JPA repository interfaces.
2023-10-10T19:14:45.216+08:00  INFO 24280 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2023-10-10T19:14:45.223+08:00  INFO 24280 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2023-10-10T19:14:45.223+08:00  INFO 24280 --- [  restartedMain] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.13]
2023-10-10T19:14:45.282+08:00  INFO 24280 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2023-10-10T19:14:45.282+08:00  INFO 24280 --- [  restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1404 ms
2023-10-10T19:14:45.347+08:00  WARN 24280 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Failed to determine a suitable driver class
2023-10-10T19:14:45.350+08:00  INFO 24280 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2023-10-10T19:14:45.369+08:00  INFO 24280 --- [  restartedMain] .s.b.a.l.ConditionEvaluationReportLogger :

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2023-10-10T19:14:45.388+08:00 ERROR 24280 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   :

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

Process finished with exit code 0


i have tried couple of way like edit source repository under pom.xml but it doesnt work. Hopefully hope to get the solution.