Fix issue for checking stuck jobs with time difference format

[Jin-Sun-tts]

Pull Request

Related to [Add more information for the stuck harvest job report#4184]

About

Changed the way to check time difference between now and created time. And output the raw format of the time diff.

PR TASKS

• [x] The actual code changes.
• [x] Bumped version number in setup.py (also checked on PyPi).