OSERROR When mkdir

[Oshadha]

Error:
OSError: [WinError 123] The filename, directory name, or volume label syntax is incorrect: 'D:\\1. Oshadha\\2. Code\\Python\\11. Discord Bot\\Logs\\1 Session 22/06/29 - 10:34:05.txt'

def time_now():
    t = datetime.datetime.now()
    frmt = t.strftime('%y/%m/%d - %H:%M:%S')
    return frmt

current_Dir = os.getcwd()
log_Dir = os.path.join(current_Dir + "\\Logs\\")

cSession = f'{log_Dir}{ID} Session {time_now()}.txt'
os.mkdir(cSession)

Whats wrong??


EDIT: I got it, Invalid File Name. Cant use special Characters.
Im Dumb..