Python datetime.strptime() Error: 'time data '' does not match format '%Y-%m-%d %H:%M:%S''

This error occurs when the value of tdopTimeStart is an empty string. The datetime.strptime() function expects a non-empty string that matches the specified format ('%Y-%m-%d %H:%M:%S').

To fix this error, you should check the value of tdopTimeStart and make sure it is not an empty string before trying to parse it as a datetime object. You can add an if statement to handle this case:

if tdopTimeStart:
    start_datetime = datetime.strptime(tdopTimeStart, '%Y-%m-%d %H:%M:%S')
else:
    # Handle the case when tdopTimeStart is an empty string
    # For example, you can assign a default value to start_datetime or raise an exception.

Alternatively, you can validate the input before passing it to datetime.strptime() to ensure it is a valid datetime string.