added Stufff

templates/error.html

@@ -0,0 +1,9 @@
+{% extends "base.html" %}
+{% block content %}
+    <div class="error">
+        <i class="fas fa-triangle-exclamation"></i>
+        <h1>Error {{error_code}}</h1>
+        <strong>{{error_message}}</strong>
+    </div>
+{% endblock %}
+