fix: log error when invalid template is rendered

src/handlers/mod.rs

@@ -131,7 +131,7 @@ pub async fn render_template(
     };
 
     // Tell the engine to render the template assigned above
-    let rendered = tpls.get(template_filename).unwrap().render(&template);
+    let rendered = tpls.get(template_filename).expect("Couldn't find the template filename").render(&template);
 
     // Set the status code and render the completed page
     res.set_status_code(status_code);