Why does my settings form redirect to the homepage?

Having had a good night’s sleep, I see the typo is glaringly obvious.

I have:

<form action="post" action="options.php">

It should be:

<form method="post" action="options.php">

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