What is the error in the code, python PyQt5?

Question

PyQt

The code does not work, I still don’t understand what the error is:
https://disk.yandex.ru/d/MCnfotM9yqy1cg
(I attached the code to the link because it didn’t fit according to habr’s rules)
photo of the error:

Answer 1

QLabel has no attribute 'clicked'
https://doc.qt.io/qt-5/qlabel.html
Code line number given

Answer 2

^tyt(.*)zzzz$
Regex101