Fix div by 0 error in info task

backend/src/tasks/info.rs

@@ -35,6 +35,10 @@ pub async fn info_task(state: &State) {
 
     let mut collectors = collectors.into_boxed_slice();
 
+    if collectors.is_empty() {
+        return;
+    }
+
     let server_message = &state.server_message;
 
     let collectors_len = collectors.len();