How can I resolve system error bad gateway 502 in Safari?

“why when i look up a website it says system error occurred bad getaway error 502“

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Gateway Error 502:

There is an error between the server connections whole accessing them over your Internet connection. So,…

• try refreshing the page.
• If you are using a VPN, then turn it off.
• try another browser
• reenable WiFi
• Restart your computer, if neither works.