I just finished setting up my multisite. However

I just finished setting up my multisite. However the subdomain is not working.

I believe I followed every step necessary to create a subdomain network for wordpress multiste.

I also have created a wildcard subdomain

*.yofnel.com

That points to /public_html

My main website is working. I was able to create sites too but these created sites are not working. When I visit them(testing.yofnel.com) it just says "Oops! Google Chrome could not find testing.yofnel.com"

I dont know what to do now. Please help.