frank screenshot crashes with keyboard

Question

We have a textfield which we tap on in our cucumber functional test step.

we take screenshot after every step using this line: frankly_screenshot("#{screenshot_file}”)

But when we have a number keyboard shown on tapping the textfield, above line crashes the app.

Anybody who faced similar issue ?

Sample code:

AfterStep do |scenario|
def self.take_screenshot(file_name = "img")
    time = Time.now.strftime("%F_%H-%M-%S")
    screenshot_file = "Screenshots/" + "#{file_name}-#{time}.png"
    frankly_screenshot("#{screenshot_file}")
    screenshot_file
  end