Selenium error

Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    browser.find_element_by_name('enkel_knapp').click()
  File "C:\Users\MYUSERNAME\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 437, in find_element_by_name
    return self.find_element(by=By.NAME, value=name)
  File "C:\Users\MYUSERNAME\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 843, in find_element
    'value': value})['value']
  File "C:\Users\MYUSERNAME\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 308, in execute
    self.error_handler.check_response(response)
  File "C:\Users\MYUSERNAME\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"name","selector":"enkel_knapp"}
  (Session info: chrome=61.0.3163.100)
  (Driver info: chromedriver=2.33.506120 (e3e53437346286c0bc2d2dc9aa4915ba81d9023f),platform=Windows NT 10.0.15063 x86_64)