Cannot send an empty message

Unexpected input(s) 'message', valid inputs are ['webhook-url', 'content', 'thread-id', 'thread-name', 'flags', 'wait', 'username', 'avatar-url', 'tts', 'raw-data', 'filename', 'embed-title', 'embed-url', 'embed-description', 'embed-timestamp', 'embed-color', 'embed-footer-text', 'embed-footer-icon-url', 'embed-image-url', 'embed-thumbnail-url', 'embed-author-name', 'embed-author-url', 'embed-author-icon-url']

Failed to restore: "/usr/bin/tar" failed with error: The process '/usr/bin/tar' failed with exit code 2