I am trying to Complete OAuth process for Shopify and getting above mentioned error.
What it does? A log in page appears, after my credentials it redirects to my URL which I also registered in App URLs in Shopify Partners.
I am following documentation from Official Shopify Api https://github.com/Shopify/shopify-api-node
const session = yield shopify_api_1.default.Auth.validateAuthCallback(request, response, query);
this is where the problem is, if I get session, I can move on
looking forward for answers.