TypeError: Zotero.Styles.get(...).getCiteProc is not a function

[pcavicch]

Hello. Whatever question I ask, the answer is always this:

{
  "name": "TypeError",
  "message": "Zotero.Styles.get(...).getCiteProc is not a function",
  "stack": "createCitations@resource://gre/modules/addons/XPIProvider.jsm -> jar:file://extensions/aria@apex974.com.xpi!/bootstrap.js -> jar:file://extensions/aria@apex974.com.xpi!/chrome/content/scripts/index.js:52687:15\n_call@resource://gre/modules/addons/XPIProvider.jsm -> jar:file://extensions/aria@apex974.com.xpi!/bootstrap.js -> jar:file://extensions/aria@apex974.com.xpi!/chrome/content/scripts/index.js:67008:46\n"
}

How can I solve this? Thanks.