I posted this question
Disable Touchscreen Automatically on Boot in Bash
Hoping to disable my touchscreen. I followed the answer that begins "to permanently disable the touchscreen input". Now, once I log into my ubuntu account, my mouse and my keyboard no longer work.
Because of this, I can't get back into the file to undo what I changed.
Is there a way I can log in without these things being disabled?
The touchscreen is still working but I can't type anything. Nor can I copy paste into the terminal.
Using copy and paste in my browser, I have been able to navigate to the file in my browser and take a photo of it:

It's the bottom section that I edited.