HTML <a> tag for linking clickable phone number not working

[CanadianWebDev]

I'm having issues getting the clickable phone tag to work, it just brings me to an error page when clicked. I've tried looking through a bunch of resources and tried to fix it, but have had no luck. Any help is very much appreciated!
Here is the code I have currently: <a href=“tel:+14036220090”>403-622-0090</a>