Fatal error during login on Plesk | WordPress.org

Mirco Babini
(@mirkolofio)

3 months, 1 week ago

I was experiencing a Fatal error during login on Plesk and investigated it.
The issue is into the dep vendor/siteground/siteground-data/src/Settings.php

https://gist.github.com/mircobabini/0c985bf7a22f1e9d1262a02e80217b23#file-sg-settings-php-L344-L352
Check the docs for wp_remote_retrieve_header, the response can be an Array (and it is, on certain Plesk).

So this would cause a fatal into the last row:
array_key_exists( $host_header, $host_headers )

Because the array_key_exists does NOT accept an array as key.

To simulate the error, just force $host_header = array( ‘Plesk’, ‘18.0.17’ );
And you will see the fatal.

Viewing 1 replies (of 1 total)

Plugin Support Vladimir Trandev
(@vtrandev)

3 months, 1 week ago

Hello @mirkolofio,

To help us further investigate the issue, could you provide a few more details. As far as I understand, the issue occurs once you try to login to your WordPress backend while the frontend is working as expected. I would like to clarify that we have recently released a new plugin version, so please specify the exact plugin version you are working with.

Please, also explain on which PHP versions you have made your tests and whether you have tried to disable all other plugins in order to eliminate any filtering of the headers earlier in the execution chain. If possible, please share the exact stack trace from your php_errorlog. We’d like to see the full execution chain leading to that Settings.php call.

You mentioned this is specific to certain Plesk setups. Do you happen to know if there is a specific Nginx/Proxy configuration or another host specific plugin active that might be duplicating these headers?

Regards,

Vladimir

Viewing 1 replies (of 1 total)

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1 reply
2 participants
Last reply from: Vladimir Trandev
Last activity: 3 months, 1 week ago
Status: not resolved