Image can't show because extension has changing

Hi all, sorry my english so poor.

latest, i install ghost on my local PC and deploying it to github pages, i have run my ghost site locally and it works , but when i deploy it, my sites on, images is not showing. then i check in my post html file and i found

how to make my images extension always .jpg , i have tried with .png and it not works


Interesting setup, cool though! Looks like you’re trying to use srcset and sizes attributes for the img element. We currently don’t support alternative image sizes which is why your images are missing. Try removing these attributes and values so the default src value comes through