Searching non-existing user

Hello guys,

Did anyone face issue while searching non existing user on Seafile 6.0.4 community edition? While searching of such user I get this:

Page unavailable
Sorry, but the requested page is unavailable due to a server hiccup.
Our engineers have been notified, so check back later.

I found following thread but it is related to the Pro edition.

Thank you in advance.

Best regards,
R0den