Hey everyone. Could you please help me with Knowledge base in VAPI? I uploaded documents in Files but I cannot choose any knowledge base within assistants. I've been waiting for 3 days now. thank you https://cdn.discordapp.com/attachments/1211484481848873020/1338534313972469871/f5ebc9bfaf3a44d0bcd316b3e0ad5340d2fa862ae2874b99b4ee77497447ae5a.png?ex=67ab6eb9&is=67aa1d39&hm=a4bff53c8f1244e9f6da0cfbb873d31f592dcbb4c834471b3e283e35b97e8ae1& https://cdn.discordapp.com/attachments/1211484481848873020/1338534314303950940/e5397a2cc69d4a03831ee4ea90ef6e9bba0db858403a440e98c326e239e341af.png?ex=67ab6eb9&is=67aa1d39&hm=7bbb54c7863573076c1e5775e11a9d5ad447a38895e89605c2a910bd54e54c2c&