This AM we are seeing a lot of 520 errors

This AM we are seeing a lot of 520 errors, this is affecting our app.

I have a response below:

\n* Ray ID: 8833bf13d8956449
\n* Your IP address: 191.135.34.32
\n* Error reference number: 520
\n* Cloudflare Location: Rio de Janeiro

Hello Cloudflare Support,

We have been experiencing intermittent 520 errors when accessing our application via our Wi-Fi network. This issue has been causing inconvenience to our users, and we’re keen to resolve it as soon as possible.

Upon investigating, we noticed that requests to our application result in a 520 error response with the following Ray ID: 88341876dd3e64bd. Our application is hosted on NodeChef, and Cloudflare is used for our Cloudfront and DNS services.

We’ve compared the request details between successful requests made from a mobile network and failed requests made from our Wi-Fi network. Despite similar request parameters, requests from the Wi-Fi network consistently result in 520 errors.

We’ve already ruled out issues with our application server, as no errors are logged on our end during these occurrences.

Here are the key details for the failed request:

Could you please investigate this issue further from your end and provide any insights or solutions to resolve these intermittent 520 errors on our Wi-Fi network?

Thank you for your assistance.

Best regards,

Hello Cloudflare Support,

We have been experiencing intermittent 520 errors when accessing our application via our Wi-Fi network. This issue has been causing inconvenience to our users, and we’re keen to resolve it as soon as possible.

Upon investigating, we noticed that requests to our application result in a 520 error response with the following Ray ID: 88341876dd3e64bd. Our application is hosted on NodeChef, and Cloudflare is used for our Cloudfront and DNS services.

We’ve compared the request details between successful requests made from a mobile network and failed requests made from our Wi-Fi network. Despite similar request parameters, requests from the Wi-Fi network consistently result in 520 errors.

We’ve already ruled out issues with our application server, as no errors are logged on our end during these occurrences.

Here are the key details for the failed request:

Could you please investigate this issue further from your end and provide any insights or solutions to resolve these intermittent 520 errors on our Wi-Fi network?

Thank you for your assistance.

Best regards,

Cloudflare cannot fix your 520 errors. You have to fix that on your origin server. You may need to work with your host to identify the source of the problem. Be sure to click on the linked number in your post or mine to view the Tutorial.