"Unable to find elements" on previously working scripts

All my scripts were working well prior to yesterday, when I installed anaconda package manager for some data science projects. Now I get this type of error:

Changing it to find_element_by_id (using resource id):

    Traceback (most recent call last):
  File "main_orbs_2.py", line 436, in test_today
    inTheBox = self.driver.find_element_by_id("com.lumobodytech.lumolift:id/bottom_button")
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 226, in find_element_by_id
    return self.find_element(by=By.ID, value=id_)
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 692, in find_element
    {'using': by, 'value': value})['value']
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 193, in execute
    self.error_handler.check_response(response)
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/appium/webdriver/errorhandler.py", line 29, in check_response
    raise wde
WebDriverException: Message: Invalid locator strategy: css selector

Changing to find by xpath:

 Traceback (most recent call last):
  File "sign_in_test.py", line 55, in test_sign_in_with_email
    el = self.driver.find_element_by_xpath("//android.widget.LinearLayout[1]/android.widget.FrameLayout[1]/android.widget.RelativeLayout[1]/android.support.v4.view.ViewPager[1]/android.widget.RelativeLayout[1]/android.widget.Button[2]")
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 250, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 692, in find_element
    {'using': by, 'value': value})['value']
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 193, in execute
    self.error_handler.check_response(response)
  File "/Users/Varun/anaconda/lib/python2.7/site-packages/appium/webdriver/errorhandler.py", line 29, in check_response
    raise wde
NoSuchElementException: Message: An element could not be located on the page using the given search parameters.