Erro 522 no API conecter

So I’m getting error 522 when integrating with the API. The API is OK and it’s working outside of Bubble, it’s just here that it’s giving an error, what can I do to get this?

522 means connection is broken somewhere, I recommend to first use the API in postman and then replicate it here

So it has already been tested on Postman and on our other system and it is OK, it is only the connection with Bubble that has this error