Sending image in line with yagmail displays "--image should be here" in email preview

[lmbonnefont]

I am trying to send an image inline with python via yagmail. Everything works fine but when I receive it displays "--img image_resize should be here" on the email preview (from the page where you see all your emails).

Anyone knows how to get rid of it? I cannot find anything about it.

My code so far is

The function inline has just a pass in the lib code

[kootenpv]

Would it be better if it just said "image_resize.jpg" or would you want no text?