Hi,
A lot of images are broken on the wiki:
There is a php error before the image data:
It’s a bug in DokuWiki resize, if I remove w=400 the image is displayed correctly.
Yea that’s an issue I have seen a lot. Removing the ?400 or ?200 part from the image link fixes it.
But yes, there is a bug in the resize option.
It’s fixed, thank you for report 
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