How to fix ob_end_flush() failed to send buffer of zlib output compression (1)?

Add a PHP line using Code Snippets.

remove_action( 'shutdown', 'wp_ob_end_flush_all', 1 );

Code Snippets link https://en-ca.wordpress.org/plugins/code-snippets/

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)