try

src/model/notification.rs

@@ -135,12 +135,22 @@ ORDER BY read_at DESC, created_at DESC;
         .await
         .unwrap();
 
+        println!("in mark_read");
+
         if let Some(action) = self.action_after_reading.as_ref() {
+            println!("{action:#?}");
             // User read notification about cancelled trip/event
             let re = Regex::new(r"^remove_user_trip_with_trip_details_id:(\d+)$").unwrap();
             if let Some(caps) = re.captures(action) {
+                println!("in 2nd if");
                 if let Some(matched) = caps.get(1) {
+                    println!("in 3rd if");
                     if let Ok(number) = matched.as_str().parse::<i32>() {
+                        println!("number: {number}");
+                        println!(
+                            "DELETE FROM user_trip WHERE user_id = {} AND trip_details_id = {}",
+                            self.user_id, number
+                        );
                         let _ = sqlx::query!(
                             "DELETE FROM user_trip WHERE user_id = ? AND trip_details_id = ?",
                             self.user_id,