Issue with formatted results for search URL

[scheidelerl scheidelerl]

Hello,

all formatted results for a items throw errors.

We use bib, but tested with citation, too. Both seems to have a problem.

I get a "500" Status Code and "Internal Server Error" as Message.

This works:
https://api.zotero.org/groups/<groupId>/items?limit=20&include=data&q=<searchString>&qmode=everything

This not: 

https://api.zotero.org/groups/<groupId>/items?limit=20&include=bib&q=<searchString>&qmode=everything

https://api.zotero.org/groups/<groupId>/items?limit=20&include=citation&q=<searchString>&qmode=everything

https://api.zotero.org/groups/<groupId>/items?limit=20&include=data,bib&q=<searchString>&qmode=everything

https://api.zotero.org/groups/<groupId>/items?limit=20&include=data,citation&q=<searchString>&qmode=everything

https://api.zotero.org/groups/<groupId>/items?limit=20&include=data,bib,citation&q=<searchString>&qmode=everything

Not only searches not work:
https://api.zotero.org/groups/<groupId>/items/<itemId>?format=json&include=bib

does not work either. 

Greetings 

Lars Scheideler

[Dan Stillman]

Sorry, there was a temporary issue with citation/bibliography generation
via the API. It should be fixed now.