Fix 400 error on get_block() call

[logicalicy]

jamalex#292

[fedeserbin]

Hi devs. First of all, thank you very much for your work. It really helped my organization.

I need to solve this issue but dont know how to preceed.

My app use the library from pypi notion==0.0.28. I lnow that I cant edit the files cause those are outside the project.
What do I have to do? Download the files and insert them in the proyect? Its a django proyect.

Thank you!!