Seems something wrong with my image insert button how to solve it?

[Zhe Lee]

how to use the image button here, I don't know where to click? 

My system is win 10, I use nodejs server to build the TiddlyWiki. TiddlyDesktop also this problem so how to solve it? 

[Mark S.]

The image picker only presents images that are already in your TW file.

You can embed images directly into your TW file by dragging and dropping,
or keep the images external using the _canonical_uri field. See:

See https://tiddlywiki.com/#How%20to%20embed%20PDF%20and%20other%20documents

for details on how to embed images. Although the title of the article says "PDF",
it also applies to png and jpeg files.

HTH