Bug in Cursor Docs Crawling

I have been using cursor for some time now but recently (today) I have not being able to crawl any documentation I give to the cursor and it goes into an indefinite loop.

I have tried reinstalling and using different combinations of docs but it doesn’t work.

Also I do not see any option to change the model I wish to use for chatting in the chatbox which used to be there in the past. Can you please suggest?