How can a PHP beginner troubleshoot issues related to file inclusion errors?

When troubleshooting file inclusion errors in PHP, beginners can start by checking the file paths to ensure they are correct. They can also verify that the files being included actually exist in the specified locations. Additionally, using functions like `file_exists()` or `is_file()` can help confirm the existence of the files before including them.

if (file_exists('path/to/file.php')) {
    include 'path/to/file.php';
} else {
    echo 'File not found';
}