Reject group avatar commands outside a running chat service

tools/chatgui/src/avatars/groupavatarmanager.cpp

@@ -62,7 +62,10 @@ QImage GroupAvatarManager::image(const QString& channel, quint64 version, const
 }
 
 void GroupAvatarManager::upload(const QString& channel, const QString& source) {
-    if (!gui_bridge_is_uasync_ready()) { emit status(channel, text("Chat is stopped")); return; }
+    if (!gui_bridge_is_uasync_ready()) {
+        DEBUG_WARN(DEBUG_CATEGORY_CHAT, "group avatar: upload requested while chat is stopped channel=%s", qPrintable(channel));
+        emit status(channel, text("Chat is stopped")); return;
+    }
     quint64 generation = ++m_generation[channel]; emit status(channel, text("Preparing group avatar…"));
     m_pool.start(QRunnable::create([this, channel, source, generation] {
         QImageReader reader(source); reader.setAutoTransform(true); QImage image; QByteArray encoded; QString error;