Refresh the image, no new image is generated.

Question

Teacher Zhu, why do I write the refresh verification code according to your method (the code is the same, there is no mistake), and there is a picture when I enter it for the first time, but there is no picture after refreshing.

Answer 1

Mine is the same. Once I refresh, there is no verification code image. Only when I click refresh again does the verification code image appear.

Answer 2

I guess we are the same. 404