Bug Description
get_404_template() is documented to return "Full path to 404 template file."
https://developer.wordpress.org/reference/functions/get_404_template/
VIP Code Analysis Bot still throws a warning
⚠️ Warning( severity 3 ): Absolute include path must be used. Use get_template_directory(), get_stylesheet_directory() or plugin_dir_path() (WordPressVIPMinimum.Files.IncludingFile.NotAbsolutePath).
Minimal Code Snippet
include( get_404_template() );