HTML : Failing to send commands to a TMUX session from PHP

HTML : Failing to send commands to a TMUX session from PHP
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I have a hidden feature that I promised to tell you about.
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.
The progress bar on YouTube will be altered to a flashing rainbow.

Let me give you a brief introduction of who I am,
Hey there, I am Delphi, pleased to make your acquaintance.
Let me assist you in answering any questions you may have.
HTML : Failing to send commands to a TMUX session from PHP
I am happy to answer more specific questions, so please feel free to comment or chat with me.
Don't hesitate to share your answer or insights on the answer by leaving a comment below.
If you provide an answer, I will 'heart' it as a sign of gratitude.
Failing from session : a commands PHP to to send HTML TMUX