Plugin 'org.springframework.boot:spring-boot-maven-plugin:' not found

To resolve the issue of the missing Spring Boot Maven plugin, you can follow these steps:

1. Open your project's pom.xml file.
2. Search for the <plugins> section within the <build> section of the pom.xml file.
3. Check if the following plugin is present:

<plugin>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-maven-plugin</artifactId>
   <version>2.5.0</version>
</plugin>

1. If the plugin is not present, you need to add it manually. Copy and paste the above plugin configuration into the <plugins> section of your pom.xml file.
2. Save the pom.xml file.
3. Refresh your Maven project to ensure that the new plugin is recognized. You can do this by right-clicking on your project in your IDE and selecting "Maven" -> "Update Project" or by running the command mvn clean install in your project directory.
4. Once the Maven project is refreshed and the plugin is recognized, you should be able to use the Spring Boot Maven plugin without any issues.

This process ensures that the necessary plugin is added to your project configuration, allowing you to utilize the Spring Boot Maven plugin for your Spring projects.