DiagnosticError

<pre class='language-text'><code class='language-text'> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ <strong><span style="color: Tomato;"> </span></strong><strong><span style="color: Tomato;">✖</span></strong> <span style="color: Tomato;">This is the message of the diagnostic. It will appear in different colours based on the severity of the diagnostic.</span> </code></pre>