On the company [site](https://www.charliechaplin.dev/) from the last challenge, visit the About Us page.
Scroll down to the bottom of the page and you will find an image from Imgur.
Visit the page and then the account, then go to the Comments tab and scroll to the oldest comment, which contains the flag:
`uiuctf{tH3_pR_p0Lic3_h@vE_cAugHt_Up?!}`