File "<string>", line 2, in capture_page_screenshot
File "D:\RobotFramework_study\ride_64\PortablePython2.7.5.1\App\lib\site-packages\robotframework_selenium2library-1.7.4-py2.7.egg\Selenium2Library\keywords\keywordgroup.py", line 15, in _run_on_failure_decorator
return method(*args, **kwargs)
File "D:\RobotFramework_study\ride_64\PortablePython2.7.5.1\App\lib\site-packages\robotframework_selenium2library-1.7.4-py2.7.egg\Selenium2Library\keywords\_screenshot.py", line 90, in capture_page_screenshot
if hasattr(self._current_browser(), 'get_screenshot_as_file'):
File "D:\RobotFramework_study\ride_64\PortablePython2.7.5.1\App\lib\site-packages\robotframework_selenium2library-1.7.4-py2.7.egg\Selenium2Library\keywords\_browsermanagement.py", line 539, in _current_browser
raise RuntimeError('No browser is open')
20180503 15:31:16.584 : WARN : Keyword 'Capture Page Screenshot' could not be run on failure: No browser is open