Support » Plugin: SecuPress Free — WordPress Security » Firewall – 502 Bad Gateway

  • Hi Guys,

    I’ve installed this plugin on a number of sites but I’m having problems with one of them. I’m having trouble with the Firewall page, every time I click on any of the SAVE ALL CHANGES buttons on this page I get the following error…

    502 Bad Gateway
    The server returned an invalid or incomplete response.

    Can anyone help with a solution?

    Many Thanks – Ian

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  • UPDATE – I can still access the website ok but I just can’t make any changes to the settings on the Firewall page. I’ve also just taken a look at the server error log and found this…

    [client] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘’ at line 1 for query SHOW GRANTS FOR made by do_action(‘toplevel_page_secupress_scanners’), WP_Hook->do_action, WP_Hook->apply_filters, secupress_scanners, secupress_scanners_template, require_once(‘/plugins/secupress/inc/admin/scanner-step-3.php’), SecuPress_Scan_DB_Prefix->need_manual_fix, secupress_db_access_granted

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