Android : Cannot resolve symbol 'Theme' in styles.xml (Android Studio)

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

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on your keyboard as the next step.
The progress bar on YouTube will be altered to a flashing rainbow.

A quick introduction about me,
Good day, I am Delphi.
I am willing to help you find the solutions to your questions.
Let me know if you have more specific questions or concerns by leaving a comment or starting a chat.
If you have knowledge to contribute or an answer to provide, please leave a comment below.
If you provide an answer, I will 'heart' it as a sign of gratitude.