Hi,
How did you install UD? Was it via FTP? It’s likely that some files have not transferred. Please can you verify the contents of the zip you’ve downloaded, in particular the directory updraftplus/addons/ , and compare it with what’s on your webserver (in wp-content/plugins/updraftplus/addons/ ) – I think there are some missing.
If they’re not missing, then the problem is that the “addons” directory and its contents aren’t readable to PHP, and that you need to re-adjust the file permissions to make it readable.
David