Random Error Code 525 "client problem: no host specified in headers or uri"

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Hello,

I have a Remix app that was running perfectly fine. I made no changes at all and then I got a random Cloudflare error 525 on my website.

The app works perfectly fine on the myapp.fly.dev site. I’m not sure what has changed on cloudflares end and what I can do to fix it.

My monitor log shows the error “client problem: no host specified in headers or uri” when I try to go to my actual domain name. Does this mean that is something that I might have to try and change on the application code itself?

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Problem solved… needed to renew certificates. Would be kind of nice of Fly.io to remind me of that or have a bigger UI pop up telling me this is the issue. Although it is stupid of me to not notice this first all I have to my defense is sometimes you got a stupid week and it would be nice to have an automation, like an email warning, to help prevent this for the future.

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