5#DRIVER ERROR

5#NoSuchElementError: no such element: Unable to locate element: {"method":"xpath","selector":"//window[contains(@class, 'reports')]//div[contains(@class, 'troopsDetailContainer')][1]//table[contains(@class, 'troopsTable')]//tbody[contains(@class, 'lostTroops')]//td[1]"}
  (Session info: chrome=68.0.3440.106)
  (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 10.0.17134 x86_64)

5#Element //window[contains(@class, 'reports')]//div[contains(@class, 'troopsDetailContainer')][1]//table[contains(@class, 'troopsTable')]//tbody[contains(@class, 'lostTroops')]//td[1] was not  found