Permissionerror: [errno 13] Permission Denied In Django

I have encountered a very strange problem. I'm working with django, I create a directory on server, and try to save pickle file into it, this way: with open(path, 'wb') as output:

Solution 1:

It seems like i have figured out this myself. Found this question, and did excactly what is written there.

Permission denied when trying to write to file from a view

But I still don't know what was the problem in my case :(