I am online but Facebook will not load on my MacBook Pro

I am online but my facebook will not load. I cannot check notifications, read any messages or even deactivate my account. I have tried logging in with other devices and it seems to work it's just my mac that's having a problem. I can visit other sites such as twitter, yahoo, youtube...etc. I have also tried different wifi locations and still have not gotten a response. This has been going on for a couple of days now so i need help asap!
 
Sounds like it could be a modified hosts file too. Can you check /etc/hosts to see if there are any entries about facebook there?
 
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