diff --git a/.github/workflows/CI_CD.yml b/.github/workflows/CI_CD.yml
index 0d938247..e8d60bc9 100644
--- a/.github/workflows/CI_CD.yml
+++ b/.github/workflows/CI_CD.yml
@@ -75,6 +75,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: aarch64-linux-android, armv7-linux-androideabi, x86_64-linux-android, i686-linux-android
+      - run: cargo install cargo-expand
       - uses: Swatinem/rust-cache@v2
       - uses: baptiste0928/cargo-install@v2
         with:
diff --git a/app/pubspec.lock b/app/pubspec.lock
index 3a4a7af5..eab7c353 100644
--- a/app/pubspec.lock
+++ b/app/pubspec.lock
@@ -165,10 +165,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
+      sha256: f092b211a4319e98e5ff58223576de6c2803db36221657b46c82574721240687
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.1"
+    version: "1.17.2"
   colorize:
     dependency: transitive
     description:
@@ -391,18 +391,18 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: "6501fbd55da300384b768785b83e5ce66991266cec21af89ab9ae7f5ce1c4cbb"
+      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.15"
+    version: "0.12.16"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.5.0"
   meta:
     dependency: "direct main"
     description:
@@ -548,10 +548,10 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.1"
+    version: "1.10.0"
   stack_trace:
     dependency: transitive
     description:
@@ -596,10 +596,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: eb6ac1540b26de412b3403a163d919ba86f6a973fe6cc50ae3541b80092fdcfb
+      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
       url: "https://pub.dev"
     source: hosted
-    version: "0.5.1"
+    version: "0.6.0"
   timing:
     dependency: transitive
     description:
@@ -648,6 +648,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.0"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: dc8ccd225a2005c1be616fe02951e2e342092edf968cf0844220383757ef8f10
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.4-beta"
   web_socket_channel:
     dependency: transitive
     description:
@@ -673,5 +681,5 @@ packages:
     source: hosted
     version: "2.1.1"
 sdks:
-  dart: ">=3.0.3 <4.0.0"
+  dart: ">=3.1.0-185.0.dev <4.0.0"
   flutter: ">=3.7.0"
diff --git a/bot/src/bot/dialogue/commands.rs b/bot/src/bot/dialogue/commands.rs
index 99bdf999..f3214b53 100644
--- a/bot/src/bot/dialogue/commands.rs
+++ b/bot/src/bot/dialogue/commands.rs
@@ -7,7 +7,6 @@ use crate::REDIS_USERS_SET_KEY;
 use anyhow::{Context, Error};
 use first_aid_bot_core::prelude::*;
 use redis::{aio::MultiplexedConnection, AsyncCommands};
-use std::collections::VecDeque;
 use teloxide::dispatching::DpHandlerDescription;
 use teloxide::prelude::*;
 use teloxide::types::ParseMode::Html;
@@ -73,11 +72,14 @@ pub async fn easter_egg(bot: &FABot, msg: &Message) -> Result<(), Error> {
 }
 
 async fn recursive_test(fs: &Fs, ctx: FAContext, bot: &FABot, msg: &Message) -> anyhow::Result<()> {
-    let mut q: VecDeque<_> = [(fs, ctx)].into();
-    while let Some((fs, ctx)) = q.pop_front() {
-        send_state(bot, msg, &ctx, fs)
-            .await
-            .with_context(|| format!("Error while processing state {ctx}"))?;
+    let mut q = vec![(fs, ctx)];
+    while let Some((fs, ctx)) = q.pop() {
+        send_state(bot, msg, &ctx, fs).await.with_context(|| {
+            format!(
+                "Error while processing state {ctx}. Message is {}",
+                fs.message
+            )
+        })?;
         q.extend(fs.next_states.iter().map(|(s, fs)| {
             let mut ctx = ctx.clone();
             ctx.transition(s.to_string());
diff --git a/core/tests/test_data.rs b/core/tests/test_data.rs
index 851552cf..43559cc0 100644
--- a/core/tests/test_data.rs
+++ b/core/tests/test_data.rs
@@ -26,6 +26,12 @@ fn test_md(s: &str) -> Result<()> {
 }
 
 fn test_fs(fs: Fs) -> Result<()> {
+    if fs.message.chars().all(char::is_whitespace) {
+        bail!("Empty message");
+    }
+    if fs.link.as_ref().is_some_and(|s| s.chars().all(char::is_whitespace)) {
+        bail!("Empty link");
+    }
     test_md(&fs.message)?;
     for (s, fs) in fs.next_states {
         test_fs(fs).context(s)?;