There is a problem with the verification code

Question

Unable to parse file ''{':captcha_src()}'

Answer 1

The source code is downloaded from this video, and the writing method is also typed according to the video, but the verification code does not come out. I don’t know what the problem is. I also gave you some instructions. Thank you.

Answer 2

"{:captcha_src()}"

There is something wrong with what you wrote, and you have to make sure you have the think-captcha extension installed