Wrong poster

I have another picture that is wrong. I accidentally uploaded the wrong poster and that is still the active one. Can I fix it myself or can I get some help?https://www.imdb.com/title/tt30226338/reference/?ref_=ttep_ep_3

https://www.imdb.com/title/tt30226338/mediaindex/?ref_=ttrv_ov_mi

The correct one is the one with the pumpkins.