PiCamera and Schedule is not working together

i'm a bloddy starter at programming python and don't know, what i'm doing wrong. Im reading trough the documantaions from PiCamera and Schedule, but a combinded command is not working.

So i want to do this with schedule:

schedule.every().day.at("17:20:30").do(Foto).until("17:21:30")

which is working, when the job is: print.("bla")

and i want to this with PiCamera:

camera = PiCamera()
camera.start_preview()
sleep(2)
for filename in camera.capture_continuous('img{counter:03d}.jpg'):
    print('Captured %s' % filename)
    sleep(300) # wait 5 minutes

which is also working, in its own script. (copied by documentation)

But when i put them together:

from picamera import PiCamera
from time import sleep
import schedule


def Foto():
camera = PiCamera() 
camera.start_preview()
sleep(2)
for filename in camera.capture_continuous('img{counter:03d}.jpg'):
    print('Captured %s' % filename)
    sleep(5) # wait 5 Sek

    
schedule.every().day.at("17:20:00").do(Foto).until("17:21:00")

while True:
    schedule.run_pending()
    time.sleep(1)

I get an error:

Traceback (moste recent call last):
File "usr/lib/python3.9/ast.py", line 50, in parse
return compile(source, filename, mode, flags,
File "home/pi/Dokumente/Schedule.py", line 9
camera = PiCamera()
^
IndentationError: expected an indented block

i also tried to put camera = PiCamera() before import schedule which resulted in this error:

Traceback (most recent call last):
  File "/usr/lib/python3.9/ast.py", line 50, in parse
    return compile(source, filename, mode, flags,
  File "/home/pi/Dokumente/Schedule.py", line 11
    camera.start_preview()
    ^
IndentationError: expected an indented block

I hope you can help me :)

Ps. Here are the two docs:

https://schedule.readthedocs.io/en/stable/examples.html#run-a-job-until-a-certain-time

https://picamera.readthedocs.io/en/release-1.13/recipes1.html#capturing-timelapse-sequences

The code of the function Foto is not indented.

def Foto():
    camera = PiCamera() 
    camera.start_preview()
    sleep(2)
    for filename in camera.capture_continuous('img{counter:03d}.jpg'):
        print('Captured %s' % filename)
        sleep(5) # wait 5 Sek