fix

src/lib/components/chat/Messages/ResponseMessage.svelte

@@ -876,8 +876,8 @@
 												<button
 													class="{isLastMessage
 														? 'visible'
-														: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg {message
-														?.annotation?.rating === 1
+														: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg {(message
+														?.annotation?.rating ?? null) === 1
 														? 'bg-gray-100 dark:bg-gray-800'
 														: ''} dark:hover:text-white hover:text-black transition"
 													on:click={() => {
@@ -911,8 +911,8 @@
 												<button
 													class="{isLastMessage
 														? 'visible'
-														: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg {message
-														?.annotation?.rating === -1
+														: 'invisible group-hover:visible'} p-1.5 hover:bg-black/5 dark:hover:bg-white/5 rounded-lg {(message
+														?.annotation?.rating ?? null) === -1
 														? 'bg-gray-100 dark:bg-gray-800'
 														: ''} dark:hover:text-white hover:text-black transition"
 													on:click={() => {