1.If there be " in a image title, json file will be corrupt.
You need to fix them to add backslash just before " manually.
2.If there be some Chinese characters, it is a possible to cause Character encoding error.
In this case, you need to set a file in Python's 'site-packages'.
1.You need to sign up to flickr to get API keys.
2.set up 'downloader.py' for downloading setting.
3.setting 'multi-download.sh' for the time setting.
4.run 'multi-download.sh'. You will get images and json files in chronological order.
5.When you've removed some images in your folder, you need to run 'json_clearner.py' to amend a json file.
https://itstudio.co/2018/12/28/8664/ (written in Japanese)