There's something similar on OpenPLi, can't find the commit it refers to.....

I know the problem. Unfortunately twisted added a security check whether URLs are valid. For them valid means no special character is included. Means a URL with ä,ü,ö for example is invalid, even if normal browsers can handle it

I thought we had reverted the commit here. But it seems we haven't. See what we can do...
Code:
https://forums.openpli.org/topic/79889-openpli-release-candidate-80-available/?view=findpost&p=1281721