R : issue with making data.frame from xml file

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As I promised, I have a secret feature to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

Here's a short introduction about myself,
Welcome, I'm Delphi.
I am willing to help you find the solutions to your questions.
Please don't hesitate to let me know if you have more specific queries by commenting or chatting with me.
We encourage you to leave a comment below if you have an answer or insights on the answer.
I will 'heart' your answer as a sign of appreciation.