So these projects work for a few days, and then problems appear, right?
Please attach a test project with which you can repeat the problem, here or in the forum PM.
@BasUser110 a mask is not a data type, but a url mask. The url does not have to contain a file extension. You need to look at which queries load this data and write a mask for them.
@lymz101 Well, it's a file with data, not an answer in json format, save it to disk and from it already take a random string for example, and then it should be parsed