Selenium element.text() is not considered as a string
Solution 1:
To get a web element text you should apply .text on it, not .text()
Also, there are unnecessary parenthesis here that should be removed.
So, instead of
title = driver.find_element((By.CLASS_NAME, 'mt-3')).text()
it should be
title = driver.find_element(By.CLASS_NAME, 'mt-3').text