Submit HIT button fails on Amazon Mechanical Turk mode

Hi All,

I have set up an AWS web server to hosting labelme annotation tool. Then I successfully use Amazon Mechanical Turk command tool to submit labelme task as a HIT on mturk sandbox.

When I test the HIT, I found out that I am not able to submit HIT after I click the Submit HIT button. Meanwhile the chrome browser generate the error "Refused to display 'https://www.mturk.com/mturk/welcome' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'."

It seems that something related to use iframe to show labelme webtool. Can anyone help me to figure out the solution? Thanks for in advanced.

Mike