__find_posted_time always return none

[EricCat]

Describe the bug

parent_element_described_by always return None.

To Reproduce

page_or_group_name = "asos"
browser = "firefox"/"chrome"
headless = True/False
isGroup= False

Using the scrap_to_json() func

Desktop (please complete the following information):

• OS: [MacOS, Linux]
• Browser [chrome-latest, firefox-latest]