Unable to compile after adding dependency to POM.xml - spring-boot

Question

I have an existing project and i need to add Spring Security and Spring Security Test.
I can't figure out how to add it with IntelliJ.
I know how to do this when creating a new project and I have the PlugIn installed.
Please help me find out how to add it to an existing project
When I add the dependencies manually to the POM.xml, I get the following error
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method defaultSecurityFilterChain in org.springframework.boot.autoconfigure.security.servlet.SpringBootWebSecurityConfiguration required a bean of type 'org.springframework.security.config.annotation.web.builders.HttpSecurity' that could not be found.
Action:
Consider defining a bean of type 'org.springframework.security.config.annotation.web.builders.HttpSecurity' in your configuration.
Disconnected from the target VM, address: '127.0.0.1:59290', transport: 'socket'
Process finished with exit code 0
Here is my 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.exaple.pma</groupId>
<artifactId>projectmanagement</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>projectmanagement</name>
<description>projectmanagement</description>
<properties>
<java.version>17</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-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity5</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
UPDATE - 1/18/2022
when I run
mvnw spring-boot:run
from Terminal on Windows, it works. When i click the DEBUG icon in IntelliJ, i get this exception. How do I fix this? Running from Terminal to debug once is fine but the point of using an IDE diminishes if I need to run the project from Terminal.

Answer 1

To add new dependency:
First visit https://mvnrepository.com/ and search the dependency you want to add. Then copy that dependency.
Now go to IntelliJ and open pom.xml and add your copied dependency here.