Protocol "http:" not supported. Expected "https:" when using api format --> plaintext

Hi All,

I am using a rest api which works fine and returns rawXml / json but my api has the options to add the key format with the option plaintext. When I test this in postman it all works fine and it only returns one of the fields that I need in plaintext.

When I want to do this in retool I get the error Protocol "http:" not supported. Expected "https:"
It does create my data through the api but does not return anything.

Does anybody know if this can be solved?

@Sander Can you share your query & resource config? Do you use a proxy with this?