try this
chrome://flags/#out-of-blink-cors
Disable the 'out-of-blink-cors' flag by copying and pasting that address into the address bar of Chrome followed by [enter]. In the page that opens you'll see a highlighted so-called 'flag' (experiment). Disable it and restart Chrome
for info check this - https://geeksarray.com/blog/how-to-setup-cors-policies-in-aspnet-core-web-api
paste this in chrome
chrome://flags/#out-of-blink-cors