It looks like you have missing data in your dataframe which you will need to remove. Can you provide a link to where you are getting the data? It’s hard to replicate your code without it.
So this message is telling us that in the time created column there are these specific pieces of data that need to be removed. I can attached the dataset in excel form if that helps the database is connected to my university account and I can’t share it.
Okay, please email me at email@example.com with the excel data.