Returning website screenshot based on Custom Field

i think there is an error –

<img src="https://wordpress.stackexchange.com/questions/105525/<?php echo"http://s.wordpress.com/mshots/v1/'.urlencode(the_field('website'); ').'?w=200' ?>"  />

it should be

<img src="https://wordpress.stackexchange.com/questions/105525/<?php echo"http://s.wordpress.com/mshots/v1/'.urlencode(the_field('website').'?w=200' ?>" alt="" />

And if this not work.

I think you use the_field(‘website’) function which actually not return result you can try

this code.

<img src="https://wordpress.stackexchange.com/questions/105525/<?php echo"http://s.wordpress.com/mshots/v1/'.urlencode(get_the_field('website').'?w=200' ?>" alt=""  />