Just tried to access https://prayingmedic.com and https://prayingmedic.com/blog and received the same:
502 Bad Gateway
nginx/1.18.0 (Ubuntu)
Using duckduckgo
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Both links worked for me.
I sometimes get a bad gateway message, but also my computer asks if I want it to be fixed - and I click yes, and it fixes it and gives a message that says gateway fixed.
ThanQ. I’ll try again later to access Praying Medic. He’s not really my go-to source anyway as I prefer X22, And We Know, and MonkeyWerx.
((hugs))
~ lyby