Problems to import STIX2.1 Documents.

[Garicore01]

Hi! I' triying to import a stix2.1 file and I have some troubles.
If I try to upload the file I don't receive any trouble, but OpenCTI doesn't import any knowlegde. However If I copy and paste the json in "copy/paste text content" OpenCTI import the knowlogde.

I don't If I'm doing some wrong or what happend.
Futhermore, I would like to create a little python script to import the files and I'm using your API PyCTI and I can upload the files to OpenCTI but I can't validate the respective workbench to import the knowlegde to OpenCTI.