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<div class="error"><p class="error">MySQL error!</p><p><p><strong>Error esta ...
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[<div class="error"><p class="error">MySQL error!</p><p><p><strong>Error establishing a database connection!</strong></p>
<p>(Unknown MySQL server host 'sql4' (1))</p>
<ol>
<li>Are you sure you have typed the correct user/password?</li>
<li>Are you sure that you have typed the correct hostname?</li>
<li>Are you sure that the database server is running?</li>
</ol></p></div>