[Wiki-related] Can't Add Voice Source to Derivative Page

[Kazumimi]

I created a wiki page for derivative earlier today and have tried a few times to add the voice source to the page, but every time I try, it hangs on the "creating..." dialogue and then gives me the following error message:
"The ajax request failed. Please check your internet connection or
report a bug if the error repeats during your work.
code:504"

My Internet seems to be working fine for other websites and other wiki pages.

Here's a list of things I've tried:

• Trying to edit the page from two different browsers (Firefox and Safari)
• Logging out of the wiki and logging back in
• Closing out of the editing screen and then trying to edit the page again

Here's the link to the page, if anyone else wants to see and/or try for themselves.
http://utau.wiki/utauderivative:teiru-sukone

(Does it maybe have something to do with the fact I'm trying to register a Vippaloid as the voice source, seeing as the wiki says the pages for Vippaloids are locked and only editable by staff?)

 

[partial]

I'm not too familiar with the wiki, personally. It may be because the Vippaloid stuff is locked. @MystSaphyr, do you maybe know what's up with this page?