Plugin 'org.springframework.boot:spring-boot-maven-plugin: not found :127

Plugin 'org.springframework.boot:spring-boot-maven-plugin' not found usually means that the specified plugin is not available in the Maven repository or it is not correctly configured in your project's pom.xml file.

To resolve this issue, you can try the following steps:

1. Check your internet connection: Make sure you have a stable internet connection to download the required plugin from the Maven repository.

2. Verify the plugin configuration: Open your project's pom.xml file and ensure that the plugin is correctly configured. The plugin should be defined within the `<build>` section, under `<plugins>`. Here is an example configuration for the 'spring-boot-maven-plugin':

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>INSERT_VERSION_HERE</version>
        </plugin>
    </plugins>
</build>

Make sure to replace `INSERT_VERSION_HERE` with the desired version of the plugin.

3. Update Maven dependencies: Run the following command in your project's directory to update the Maven dependencies:

mvn clean install

This will download and install any missing plugins or dependencies specified in your pom.xml file.

If the issue persists, it is possible that the plugin you are trying to use is not available in the Maven repository. In that case, you may need to check if the plugin's groupId, artifactId, and version are correct, or consider using an alternative plugin.