MyBB has experienced an internal SQL error and cannot continue.

[mobo12]

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:1064 - 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 2

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Someone Please Help

[Serpius]

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:1064 - 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 2

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Someone Please Help

Screenshot does not work. It's missing.

[effone]

There is a missing parenthesis issue. Please fix the upgrade43.php file manually following this PR and then run upgrade.
https://github.com/mybb/mybb/pull/3298/files

Replace line 34 of upgrade43.php with the following:

$db->update_query('settings', array('value' => ''), 'name IN (\'captchapublickey\', \'captchaprivatekey\')'); // Clean out stored credential keys

Also I'd like to advise please wait for a day. 1.8.17 gonna be available with like 10 major fixes, apart from this.