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Filtered CSV Export and 502 error

Posted: November 29, 2018 at 7:31 am


November 29, 2018 at 7:31 am

If I use the Filtered CSV Export Button I always get a 502 error.


  • Support Staff

November 29, 2018 at 7:46 am

The main reason you’ll see a 502 bad gateway error is due to an issue with the web host. Sometimes a query, script, or request will take too long and so it is canceled or killed by the server. A lot of hosts, especially shared hosts add what they call a “kill script.” Basically what this does is it will terminate a request after a certain period of time so that it doesn’t take a site down or impact other users.

Since we don’t know for sure whether your host has a kill script in place, your can try this troubleshooting method:

Try temporarily deactivating all other plugins on the site and try those links again. If no Bad Gateway error with all other plugins deactivate, you reactivate the other plugins one-by-one until the you see the error again.


November 29, 2018 at 8:20 am

After trying something, I think it’s related to the nginx cache. Do you know that problem?


  • Support Staff

November 29, 2018 at 8:24 am

I do not. You could check with your web host, they might know what to do.


December 6, 2018 at 5:19 am

I found an error log in the proxy_error_log:
“upstream sent too big header while reading response header from upstream”
I think this is the problem. Can you fix this?


  • Support Staff

December 6, 2018 at 6:36 am

No. This is something your web host will have to fix. Here’s one (of many) references that explains how:

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Updated by  Josh 1 year, 2 months ago ago

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