Explicit wait not working with selenium3.13.0 safaridriver

I am using explicit wait like below to check if element is clickable.

WebDriverWait(driver, 30).until( expected_conditions.element_to_be_clickable((By.CSS_SELECTOR, "#search")))

But I get error

<class 'selenium.common.exceptions.WebDriverException'> Message: The command 'GET /session/.../displayed' was not found.

If I use

time.sleep()

from selenium.webdriver import Safari driver = Safari()

Here is stacktrace

File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/support/wait.py", line 71, in until
  value = method(self._driver)
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/support/expected_conditions.py", line 283, in __call__
  element = visibility_of_element_located(self.locator)(driver)
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/support/expected_conditions.py", line 127, in __call__
  return _element_if_visible(_find_element(driver, self.locator))
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/support/expected_conditions.py", line 147, in _element_if_visible
  return element if element.is_displayed() == visibility else False
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/remote/webelement.py", line 490, in is_displayed
  return self._execute(Command.IS_ELEMENT_DISPLAYED)['value']
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/remote/webelement.py", line 628, in _execute
  return self._parent.execute(command, params)
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/remote/webdriver.py", line 314, in execute
  self.error_handler.check_response(response)
  File "/Users/Library/Python/2.7/lib/python/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
  raise exception_class(message, screen, stacktrace)
WebDriverException: Message: The command 'GET /session/7.../displayed' was not found.