Lỗi IndentationError: unindent does not match any outer indentation level

[Phong_Ta (Phong Tạ)]

import speech_recognition
import pyttsx3
from datetime import date, datetime

robot_ear = speech_recognition.Recognizer()
robot_mouth = pyttsx3.init()
robot_brain = ""

while True:
	with speech_recognition.Microphone() as mic:
		print("Robot: I'm Listening")
		audio = robot_ear.listen(mic)
	try:
	    you = robot_ear.recognize_google(audio)
	except:
		you == ""

	if you == (""):
		robot_brain = "I can't hear you, try again"

	elif "hello" in you:
		   robot_brain = "hello phong"
	elif "today" in you:
		   today = date.today()
		   robot_brain = today.strftime("%B %d, %Y")
	elif "time" in you:
		   now = datetime.now()
		   robot_brain = now.strftime("%H hours %M minutes %S seconds")
    elif "Bye" in you:
    	robot_brain = "Bye phong"
    	break
	else:
		 robot_brain = "I need update to do thit"

	print("Bạn: " + you)
	print("Robot: " + robot_brain)

	robot_mouth = pyttsx3.init()
	robot_mouth.say(robot_brain)
	robot_mouth.runAndWait()

[SITUVN.gcd]

@Phong_Ta

	if you == (""):
		robot_brain = "I can't hear you, try again"

	elif "hello" in you:
		   robot_brain = "hello phong"
	elif "today" in you:
		   today = date.today()
		   robot_brain = today.strftime("%B %d, %Y")
	elif "time" in you:
		   now = datetime.now()
		   robot_brain = now.strftime("%H hours %M minutes %S seconds")
    elif "Bye" in you:
    	robot_brain = "Bye phong"
    	break
	else:
		 robot_brain = "I need update to do thit"

Bạn có thấy các dòng bên trong if - else thụt - thò không giống nhau, chả ra sao vậy không?
Python thì cú pháp phụ thuộc vào thụt lề, thụt lề sai thì sẽ gây lỗi cú pháp.