Error when using search_treebase function 

Hi, 

I receive the following error whenever I try to use the search_treebase function: 

"Error: XML content does not seem to be XML: '2d"

This error occurs even when running through the treebase tutorial, so I am pretty sure it is not to do with my particular search query. 

I am using R version 4.2.2, platform x86_64-apple-darwin17.0, MacOS Ventura 13.4 

Thanks
Yasmin 