The src attribute’s value should be the URL of some image, eg:
<img src="http://www.example.com/an-image.jpeg" alt="an image of something" />
Also it would seem to make sense to put the img in the <figure> tag, the tag is there to denote a figure (ie some self-contained content, like an image or a table or a video or whatever) of some kind. And if you do that, you could use a <figcaption> to caption the image, in which case you don’t need the alt attribute on the image.
also
I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.