xdg-open is required

There is a section in the README about ddev, perhaps this could go in there. I think this is new in SB8.

Yea, That's what I've been observing, Since SB8. I'll see if I can update the README

qick fix is to add --no-open to startup script of storybook

e.g. yarn storybook --no-open

Technically I think it was added in 8.3 or 8.4 so its pretty recent even in the SB8 releases. We're using the --no-open workaround.

To workaround the issue I am using yarn in ddev instead of npm and using the --no-open flag. The --no-open flag seemed to have no effect for me when using npm.