SQL Error #1071 - Specified key was too long; max key length is 767 bytes
<pre><code>CREATE TABLE wp_locations (
        `id` INT(11) NOT NULL AUTO_INCREMENT,
        `city` VARCHAR(255) NOT NULL,
        `name` VARCHAR(255) NOT NULL,
        CONSTRAINT `city_name` UNIQUE (`city`, `name`)
    ) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
</code></pre>

<p>I got an sql error '#1071 - Specified key was too long; max key length is 767 bytes'</p>

<p>What am I doing wrong?</p>