Hi!
I don’t see attachments on your post.
Can you please re-upload the attachment? To make sure, you can zip the file as well, so the security filter wont catch it as malicious code.
PHP errors are extremely rare and almost exclusively happen if the plugin was not installed or uploaded correctly. Please try to re-install the plugin, it might solve the problem.
Also, if you could provide a site url, back-end login details and FTP details, it would help resolving the issue.